Alternatives to Spam Arrest
Compare Spam Arrest alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to Spam Arrest in 2026. Compare features, ratings, user reviews, pricing, and more from Spam Arrest competitors and alternatives in order to make an informed decision for your business.
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InboxAlly
InboxAlly
We engage with your emails to teach inbox providers not to send your emails to spam. Our clients have seen their open rates more than DOUBLE within 1-2 weeks! Highly engaged recipients not only open emails, but scroll down as they read. So long as the content is longer than the page, this should be done for nearly all opened emails. When a recipient goes out of their way to take an email out of spam, they are telling the inbox provider, hey, you made a mistake. Moving an email from the promotions folder to the primary inbox tells inbox providers that you disagree with their sorting criteria and it and similar emails should go to the primary inbox. Demonstrates that recipient is interested in the content of your email. We have a set of random generic replies we use for this. Marking an email as important can essentially be interpreted by the inbox provider as "This email is extremely valuable, never send it to spam." -
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Greatmail
Greatmail
Dependable cloud based email hosting with spam filtering, antivirus protection, generous storage and webmail. Compatible with Outlook and all other POP3/IMAP clients. High volume SMTP service for responsible senders. Outbound relay service for transactional messages, email marketing campaigns, newsletters and other applications. Dedicated email servers, clustering and multiple IP load balancing for high volume senders. Fixed monthly cost with unlimited sending and reputation monitoring. Greatmail is an email service provider (ESP) specializing in business class email hosting, SMTP hosting and email servers. For ISPs, application programmers and cloud developers, we also provide custom solutions including dedicated IP servers and process specific, load balanced configurations with multiple servers. -
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SpamTitan
TitanHQ
SpamTitan email security is an email spam filter for businesses, smbs, MSPs, and schools. SpamTitan email security blocks spam as well as phishing and day-zero attacks, viruses, malware, ransomware, and other email threats. Helps control mail flow, clean it, and protect against unwanted email. We provide easy-to-use yet advanced email security for businesses, smbs and MSPs that are Office365 friendly. SpamTitan - Premium functionality included: • CEO Impersonation protection • Phishing/ Spear phishing protection • Link analysis • Full Sandboxing • Zero Day Attacks protection • Mail Spooling • Spoofing protection • Malware and Ransomware protection • SPF/DKIM/DMARC checking • Encryption • Fully multitenant environment • Ability to rebrand the entire UI • Full REST API: • Comprehensive support and set up docs Try a FREE, fully supported trial of SpamTitan Email Security today.Starting Price: $2.14/user/month -
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ZeroBounce
ZeroBounce
ZeroBounce is an email verification, scoring and deliverability platform helping businesses improve their inbox placement. The service detects email typos, nonexistent and abusive email accounts, spam traps and other risky email addresses. ZeroBounce also provides an email scoring service and a suite of deliverability tools to further enhance email inbox placement. The company operates a military-grade security infrastructure, ensuring customer data is protected at the highest levels. With more than 23 billion emails validated to date, ZeroBounce serves 400,000+ businesses in 190+ countries and adds up to 200 new clients every day. Companies using email lists validated by ZeroBounce report a 99%+ accuracy rate and maintain a good sending reputation. In 2019, ZeroBounce took no. 851 on the Inc. 5000 list of the fastest-growing private companies in the United States. In 2020, ZeroBounce rose to no. 40 on the list. In 2021, ZeroBounce was number 9 on the Inc. 5000 Regionals list.Starting Price: $18 - 2000 Validation Credits -
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Pobox
Pobox
Unlock your email identity. Pobox wants you to own your email address for life. Our useful features let you decide how email should work for you. Get an address you never have to change, at your own domain or one of ours. Mailstore is your Pobox email Inbox. It includes 50GB of storage that you can access with webmail, IMAP or POP. Our customer service specializes in solving problems, not giving you the runaround. Filter first! We can block mail, send you a push notification, and lots more, all before it hits your inbox. Spam protection isn't one size fits all. We let you customize to fit your comfort level. Our accounts have lots of flexible features, to reflect how you use email. Use Pobox to put your workflow on steroids. We can Import your Mailbox from another provider, to get started quickly. Native iOS and Android apps make the experience even better on your phone. Webmail uses our parent service Fastmail's best-in-breed mobile-friendly interface.Starting Price: $20 per year -
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SpamBully
SpamBully
Intelligently knows which emails you've received are good and which are spam by using artificial intelligence and server blacklists. Everytime you download your email, SpamBully will make sure good emails make it to your Inbox. Decide who and what makes it into your Inbox. Choose which email addresses, words & phrases, countries, languages, and IP's are allowed or blocked from your Inbox. SpamBully always makes sure people in your address book make it to your Inbox. Get back at spammers by increasing their costs, returning their spam, and reporting them to the servers they came from and the FTC. Email a special password to an unfamiliar sender that they must correctly type in before their email is allowed to your Inbox. Checks Realtime Blackhole Lists for internet domains that are responsible for sending massive amounts of spam and automatically filters them from your Inbox.Starting Price: $29.95 per year -
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MailChannels
MailChannels
Secure and deliver email at scale. Use MailChannels to uncover bad actors and prevent spammers from taking advantage of your infrastructure. Monitor outgoing email messages for spam and unusual sending activity. Protect your customer inboxes against spam, phishing, and other email threats. A powerful, intuitive interface makes managing your customers simple and efficient. We operate across multiple clouds and minimize single points of failure to keep our services online, all the time. Get a real human response to your ticket within 30 minutes or less, 24/7/365. MailChannels Outbound Filtering is a cloud-based SMTP relay service which identifies and blocks spammers to ensure reliable email delivery. With Outbound Filtering, you can eliminate email delivery problems caused by IP address blocklisting. Automatically shut down compromised accounts and scripts to improve your security.Starting Price: $79.99 per month -
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SpamCop
Cisco
SpamCop is the premier service for reporting spam. SpamCop determines the origin of unwanted email and reports it to the relevant Internet service providers. By reporting spam, you have a positive impact on the problem. Reporting unsolicited email also helps feed spam filtering systems, including, but not limited to, SpamCop's own service. The SpamCop Blocking List (SCBL) lists IP addresses which have transmitted reported email to SpamCop users. SpamCop, service providers and individual users then use the SCBL to block and filter unwanted email. The SCBL is a fast and automatic list of sites sending reported mail, fueled by a number of sources, including automated reports and SpamCop user submissions. The SCBL is time-based, resulting in quick and automatic delisting of these sites when reports stop. -
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Hornetsecurity Spam Filtering and Malware Protection
Hornetsecurity
Hornetsecurity’s Email Spam Filter and Malware Protection Service offers the highest detection rates on the market, with 99.9% guaranteed spam detection and 99.99% virus detection. Our Spam Filtering Service effectively protects mail servers against DDoS attacks and phishing emails. Our multi-layered spam filtering service blocks the majority of spam emails as they arrive—keeping the quarantine clear and easy to manage. With proven features and thorough spam filtering mechanisms, your inbox remains free of annoying spam emails. The abbreviation DDoS stands for Distributed Denial Of Service. A DDoS attack is a type of DoS attack in which multiple hijacked systems are used to overload system resources or network bandwidths. This makes websites and online services unreachable. For companies, this often means large financial losses due to delivery bottlenecks, for example, and major damage to their image from the perspective of customers. -
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CleanTalk
CleanTalk
CleanTalk is a cloud-based anti-spam protection service and suite of plugins that keeps websites free of spam by analyzing visitor behaviour and form submissions in real time and blocking spambots before they post comments, create fake registrations, submit contact forms, place fake orders, or send spam messages, all without requiring CAPTCHAs, puzzles, or user challenges that interrupt the visitor experience. It centralizes anti-spam detection across popular CMS platforms like WordPress, Joomla, Drupal, and custom sites by using proprietary algorithms and a growing database of spam-active IP addresses, emails, and domains to identify and filter out unwanted content while allowing legitimate user interactions to pass; administrators can view and manage logs, private block lists, and spam statistics from a dashboard. Additional features include a SpamFireWall that prevents bot traffic from reaching the site, real-time email validation to block fake or disposable addresses. -
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Preventive protection for cloud-based applications such as email, collaboration, and storage. A powerful combination of spam filtering, anti‑malware scanning, anti‑phishing, and advanced threat defense capabilities. Equip your Microsoft 365 Exchange Online, OneDrive, Teams, and SharePoint Online with an extra layer of advanced protection. Helps eliminate unsolicited emails, targeted attacks, and ransomware, allowing employees to focus on their jobs and ensure business continuity. Get immediate notifications direct to your dedicated console, or via alerts. New users are protected automatically. Provides advanced protection for Microsoft 365 applications against malware, spam, or phishing attacks with ultimate zero-day threat defense and an easy-to-use cloud management console. Now using an enhanced, award-winning engine with improved performance, this essential component filters all spam emails and keeps user mailboxes free of unsolicited or undesired messages.Starting Price: $119.50 per year
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SpamStopsHere
Zix
SpamStopsHere provides 24/7 spam filtering with zero-hour malware protection and almost no false positives without any user tuning or custom filtering. Setup is easy and there is almost no maintenance. Like our other hosted email services, it includes 24/7/365 live support via phone, chat or email. SpamStopsHere Professional and Enterprise Editions support multiple mail servers, and the ability to specify how you want us to distribute the load among them. Incoming mail is distributed evenly among your mail servers. For example, if you have 3 mail servers, roughly a third of your incoming mail will be sent to each server in an alternating fashion. SpamStopsHere will send emails to the first server in the list as long as it can receive mail, then to the next server in the list as long as it can receive mail, and so on. If Enabled, an email will be sent to your technical contact if our SpamStopsHere detects that your MX records are incorrect. -
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Checkpoint Anti-Spam and Email Security
Check Point Software Technologies
Check Point Anti-Spam & Email Security provides comprehensive protection for messaging infrastructure. A multidimensional approach protects email infrastructure, provides highly accurate anti-spam coverage and defends organizations from a wide variety of virus and malware threats delivered within email. Comprehensive email security with 97% spam detection. Advanced anti-spam protection, including content-based and via IP reputation. Offers antivirus protection with both zero-hour and signature-based detection. Email IPS protection against Denial of Service (DoS), buffer over-flow attacks. Simplified configuration and management of mail security. Simple configuration with low management-overhead. Full user control with no user installation required. Real-time detection and updates provide immediate protection from outbreaks. Integrated into the Check Point Infinity Architecture. Activate Anti-spam and email security on any check point security gateway. -
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SpamCheckAI
SpamCheckAI
Built for SpamCheck-ing free form JSON, not emails like all the other spam APIs. Detect and block spam at the source with our extensive IP address analysis. Sophisticated analysis tools for detecting and assessing potential spam content. Validate and verify emails with our thorough multi-stage process. SpamCheckAI not only identifies and blocks spam but equips you with the comprehensive data needed to make informed decisions. Unleash the unparalleled power of SpamCheckAI’s URL Analysis, a revolutionary tool that digs deep to uncover hidden risks and elevates your platform’s integrity to new heights. Just pass the email and IP if you have them, then toss in any JSON object as the body. Whether you’ve got a handful of data or a whole heap, we’re all about flexibility. With SpamCheckAI, you’re in control, and spam doesn’t stand a chance. SpamCheckAI's API can analyze various content types including emails, IP addresses, and text content. -
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SpamCheetah
Gayatri Hitech
SpamCheetah is a very affordable and effective way to combat spam, malware and viruses at mail server level. It operates as an SMTP proxy and stops all kind of phishing and business email compromise at SMTP level. It uses a combination of network level techniques like greylisting, greytrapping, blacklisting, URL scanning, malware API checks and a lot more. It comes with standard email gateway features like sender and recipient based blocking, attachment size blocking, MIME type filtering and pattern based blocking alongside quarantine reports and mail metadata reports and much more. We offer trial for 30 days along with two editions, one for single mail server and one for multiple mail servers. We also offer ISO download, VMWare appliance and raw VM download options.Starting Price: $1/month/user -
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WP Mail SMTP
WP Mail SMTP
If you're having issues with WordPress not sending emails, you're not alone. With the rise of aggressive spam filtering, it's tough to reach the inbox unless your emails are configured correctly. Once you've switched from the default WordPress email settings over to WP Mail SMTP, your email deliverability issues will be solved for good. Are you missing out on leads and sales because emails sent from your WordPress site are ending up in the spam folder? Missing out on these opportunities can be a big hit to your bottom line. When your emails are properly authenticated using SMTP, they'll be recognized as legitimate and bypass those aggressive spam filters. WP Mail SMTP integrates with all of the best secure SMTP providers. No matter how many emails you need to send, you can connect with the right provider for your business needs and budget.Starting Price: $49 per year -
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MXroute
MXroute
MXroute has an excessively powerful system to ensure that your non-spam, non-marketing emails get to their destination without worrying about IP reputation. We are, quite simply, obsessed with consistent email delivery and maintaining the highest reputation among mail providers. We support the basic e-mail protocols that you expect. SMTP, IMAP, POP3. We support mail forwarding (aka aliasing), and plus addressing. We offer Afterlogic Pro (w/ CalDAV and CardDAV), Crossbox, Rainloop, and Roundcube for your choice in webmail. We offer a variety of options for obtaining support. We do expect you to understand how to use email and how to configure your DNS to use our service, but we do offer support when you need us.Starting Price: $15 per month -
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Spamhaus
The Spamhaus Project
The Spamhaus Project is an international nonprofit organization that tracks spam and related cyber threats such as phishing, malware and botnets, provides realtime actionable and highly accurate threat intelligence to the Internet's major networks, corporations and security vendors, and works with law enforcement agencies to identify and pursue spam and malware sources worldwide. Originally founded in London 1998, Spamhaus is currently based in Andorra la Vella, Andorra, and is run by a dedicated staff of 38 investigators, forensics specialists and network engineers located in 10 nations. Spamhaus realtime threat and reputation blocklists currently protect over 3 Billion user mailboxes* and are responsible for blocking the vast majority of spam and malware sent out on the Internet. Spamhaus data is today used by the majority of the Internet's ISPs, email service providers, corporations, universities, governments and military networks. -
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Raptor Email Security
Peregrine Computer Consultants Corporation
Raptor Email Security is an MX-based email security solution designed by industry experts to stop spam, phishing, and malware attacks using a unique scoring framework and multiple technologies including SpamAssassin, ClamAV, MIMEDefang, and Sendmail. Let our experts handle the annoying spam for you! No Spam. Zero Tickets. 2X Resources. With your email going through our servers, we handle the brunt of most cyber attacks which keeps your server better protected! With less resource usage, you'll be able to increase your hosting revenue and monetize your server by adding more hosting accounts. Raptor Email Security also comes with Raptor Review which provides a detailed, expert analysis of your email configuration. It's a phishing hotline and white glove service to definitively fix your email problems including blocking spam, improving email deliverability, identifying scams, finding missing email, and unblocking good email. Set up in minutes. Free 30 Day Trial Available!Starting Price: $15/server/month -
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SpamHero
iSparks
Sender behaviors are tracked in real-time. The sender's reputation is weighed during the filtering process. Using spam traps around the world we are able to detect new spam attacks as they occur and adapt to them instantly. Never miss an important email. All spam is stored in a searchable quarantine. The process usually takes less than 5 minutes to get set up! In fact, you don’t even have to tell SpamHero what email addresses on your domain are valid. During your trial period, SpamHero will auto-learn what email addresses on your domain are valid. Unlike other spam filtering systems that rely on fancy algorithms that spammers can easily defeat, SpamHero's rule-based system features million of rules that are constantly updated and maintained by live superheroes and robots 24/7. Like other spam filtering solutions, we use popular virus scanners to help block viruses.Starting Price: $5 per month -
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Mail-in-a-Box
Mail-in-a-Box
Mail-in-a-Box lets you become your own mail service provider in a few easy steps. It’s sort of like making your own gmail, but one you control from top to bottom. Technically, Mail-in-a-Box turns a fresh cloud computer into a working mail server. But you don’t need to be a technology expert to set it up. Each Mail-in-a-Box provides webmail and an IMAP/SMTP server for use with mobile devices and desktop mail software. It also includes contacts and calendar synchronization. The box also includes other standard mail functionality like spam protection (spam filtering and greylisting), mail filter rules, email client autoconfiguration, and automated backups to Amazon S3 and other services. The box also includes automatic DNS configuration when you let it become your nameserver so that it can set important DNS records for mail deliverability and security including SPF, DKIM, DMARC, and MTA-STS. When enabled, DNSSEC (with DANE TLSA) provides a higher level of protection.Starting Price: Free -
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SpamAssassin
Apache Software Foundation
Welcome to the home page for the open-source Apache SpamAssassin Project. Apache SpamAssassin is the #1 Open Source anti-spam platform giving system administrators a filter to classify email and block spam (unsolicited bulk email). It uses a robust scoring framework and plug-ins to integrate a wide range of advanced heuristic and statistical analysis tests on email headers and body text including text analysis, Bayesian filtering, DNS blocklists, and collaborative filtering databases. Looking for tips to improve your existing installation? Click here for a variety of topics in our Wiki that might help. SpamAssassin uses a wide variety of local and network tests to identify spam signatures. This makes it harder for spammers to identify one aspect which they can craft their messages to work around. -
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Listclean
Listclean
Listclean is an email validation and email verification platform. The service removes email typos, non-existent email, No-MX, abusive email accounts, spam traps, and other risky email addresses. Fully equipped email verification solutions: - SMTP Server Checks - Mail Server Validation - MX records checks - Remove Spam Traps - Remove Hard Bounces - Remove Catch-All Emails - Remove Disposable Emails - Remove Role-Based Emails - DNS check Use our Listclean service to detect and suppress invalid email addresses. By maintaining a clean list, you reduce bounce rates and improve your performance with mailbox providers.Starting Price: $5 - 25,000 Validation Credits -
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Abusix Mail Intelligence
Abusix
Abusix Mail Intelligence is an innovative set of blocklists (RBL/DNSBL) that adds real-time threat data to your existing email protection. Considered as the first line of defense, blocklists help to prevent email-borne threats such as spam and malware from entering your network. We’re the first line of defense for your mail servers which allows you to save bandwidth and CPU caused by the more costly in-depth spam and virus analysis required for later content filtering. Abusix Mail Intelligence prevents outbound spam by helping you identify risky or compromised accounts by using our AuthBL. We also prevent outbound spam by providing additional data to your existing filters using our Domain, Short URL, Disk URL, Cryptocurrency Wallet, and Email blocklists. -
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SpamTitan Plus
TitanHQ
SpamTitan Plus Anti-Phishing is an AI-driven email protection solution that provides “zero-day” threat protection and intelligence. Spam Titan Plus provides 100% coverage of ALL current market leading anti-phishing feeds, 1.5X increase in unique phishing URL detections and has 1.6X faster phishing detections than the current market leaders. With real-time continuous updates providing SpamTitan Plus with 10 million new, never-before seen malicious URLs a day. Book a SpamTitan Plus demo Today. -
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Xeams
Synametrics Technologies
Xeams is, a secure and powerful complete mail server for Windows, Linux, Solaris, MacOSX and other flavors of UNIX. Xeams supports SMTP, POP3, and IMAP. It features a powerful spam filtering engine that eliminates up to 99% of junk email upon installation. The software offers a flexible approach to email, making it a very user-friendly server. Xeams can block 99% percent of all junk messages right out of the box. The filtering rules are fully customizable and get better as Xeams adapts to your email environment. IMAP and POP3 servers built right into the system to easily fetch emails from an email repository to a client's machine. Xeams can be used as an email firewall in front of another server, such as MS Exchange, or as a full email server requiring no other software to process emails. Use Xeams in front of your Office 365 infrastructure to gain additional filtering, reporting and archiving capabilities that you don't get with Office 365 alone.Starting Price: $20.00/year/user -
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FortiGuard Antispam
Fortinet
A highly effective antispam is key to protecting your organization because email is the #1 vector for the start of an advanced attack on an organization. FortiGuard Antispam provides a comprehensive and multi-layered approach to detecting and filtering spam processed by organizations. Dual-pass detection technology can dramatically reduce spam volume at the perimeter, giving you unmatched control of email attacks and infections. Additionally, FortiClient endpoint agents can block spam messages on remote computers and mobile devices. In the 2015 VBSPAM Test from Virus Bulletin, Fortinet’s antispam ranked second highest in the security industry for security effectiveness, earning a 99.98% effectiveness rating. Protects your organization against threats delivered through email with highly effective antispam protection. Customize your policies to fit your organization with antispam filtering at a domain, group, or individual user level. -
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MailCleaner
MailCleaner
MailCleaner is a business anti spam gateway installed between your mail infrastructure and the Internet. It offers professional protection against viruses and eliminates up to 99% of spam. While email is necessary for any corporate operations, it can also expose your company to a myriad of risks. This is because it offers virus, spyware, ransomware, cryptolocker, trojan and other harmful programs easy access to your business computers for phishing or extortion attack. This is where MailCleaner can help by stopping malware before it even reaches your employees’ inboxes. Its spam filter server ensures that more than 99% of unwanted messages are blocked, analyzing each message, so you only receive those that are important. If a harmful file is detected, MailCleaner will automatically send it to a quarantined zone where it cannot cause any more damage in the future. We are proud to offer a number of packages suitable for small companies as well as large corporations.Starting Price: $1 per month -
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GFI MailEssentials
GFI Software
Why trust email security to one antivirus engine when you can have the combined power of four? GFI MailEssentials can engage the power of leading brands including BitDefender, Avira, Kaspersky, and Cyren. Each engine features its own heuristics and detection methods. You gain maximum protection for your email environment to block email-borne viruses and other malware more effectively. Spam is estimated to be 45% of your email volume. GFI MailEssentials uses 14 advanced email filtering technologies you can see in action. Filter spam out before it hits email boxes to save your server space and productive time. Block spoofed emails, stop emails from blacklisted DNSs or those that link to known problem URLs or phishing sites, remove non-RFC compliant emails, detect emails from forged senders and more techniques to slash the spam waste. GFI MailEssentials is compatible with different email servers, not just Exchange. It fits seamlessly into your current setup.Starting Price: $99 one-time payment -
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Mailprotector
Mailprotector
Mailprotector delivers award-winning email experiences exclusively through our amazing partner resellers. Easy to use encrypted email with no plugins or apps. Bracket has turned using email encryption from dread to delight. Just wrap brackets around the [subject] in any email client on any device, and Bracket handles the rest. Total email security that filters all the junk people don’t want. CloudFilter delivers full-stack protection from annoying spam and crippling email-based virus and phishing attacks in a way that’s effective, efficient, and easy to use. Prevents spam proliferation and keeps damaging or sensitive data from being leaked via email. SafeSend expands beyond CloudFilter’s outbound filtering by giving greater control over outbound email traffic with custom content rules and more. -
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SimpleLogin
Proton AG
With email aliases, you can be anonymous online and protect your inbox against spam and phishing. Open-source. Made and hosted in Europe. Next time a website asks for your email address, give an alias instead of your real email. Emails sent to an alias are forwarded to your inbox without the sender knowing anything. Just hit "reply" if you want to reply to a forwarded email, the reply is sent from your alias and your real email stays hidden. You can also easily send emails from your alias. Quickly create an alias on the go. Sign up for a newsletter, and create a new online account with a click. Built upon open-source technology, all SimpleLogin components are also open-source. Not only can an alias receive emails, but it can also send emails. An alias is a full-fledged email address. Manage your aliases on the SimpleLogin website or on our Chrome, Firefox, and Safari extensions. Or on your phone with Android (Play Store, F-Droid) and iOS apps.Starting Price: $4 per month -
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Akismet
Automattic
Akismet filters out your comment spam for you, so you can focus on more important things. We all hate spam. It’s annoying. It hurts your site’s credibility. Filtering it manually is confusing and time-consuming. Time spent dealing with spam is time stolen from the business of your site. Used by millions of websites, Akismet filters out hundreds of millions of spam comments from the Web every day. Add Akismet to your site so you don't have to worry about spam again. Sign up for an Akismet plan that best suits your needs. Use your API key to activate your Akismet plugin or module. Rest easy knowing that Akismet is protecting your site from spam. We want to keep spam off of the web and you can help us do it. Our affordably priced personal and business options allow us to provide free spam protection for over 7 million users.Starting Price: $5 per month per site -
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Warm Up Your Email
Warm Up Your Email
Email clients like Gmail and Outlook have intelligent algorithms that know your email-sending history. If you blast emails with a new account or ever make a mistake, their algorithms put you in spam jail. Your only chance to leave spam jail is if somehow their algorithms learn that you're not spamming anymore. Warm Up Your Email receives your email and interacts positively to help you improve your sender reputation. Configure the daily send volume, as well as the subject and the body of your email, to start sending emails at your desired volume with your desired content. Your campaign will begin, and you’ll start seeing numbers in your dashboard showing how many were sent, opened, and replied to. Start analyzing the behavior of accounts hitting the spam folder with a 10-day spam pattern report that shows how using Warm Up Your Email affects your email deliverability and if you’re getting back to the inbox over time.Starting Price: $29 per month -
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ALTOSPAM
OKTEY
This antispam and antivirus software is an online filtering bridge that quickly free you from the waste of time and expenses generated by the flooding of undesirable e-mails. ALTOSPAM is an integrated SaaS software protecting your email from spams, viruses, scams and phishing. It allows companies owning at least one domain name to secure its email servers. ALTOSPAM combines 16 anti-spams technologies, 6 anti-viruses as well as other security services such as anti-relay, anti-scam, anti-phishing and protection against denial-of-service attacks. In addition, this externalized antispam and antivirus software ensures a very high availability of you email services. Altospam is a full-service corporate email protection, integrating multiple security levels for your emails. ALTOSPAM not only blocks most unwanted emails, but mostly its antispam software has been designed to minimize false positives.Starting Price: $7 per user per month -
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Symantec Email Security.cloud
Broadcom
Safeguard Microsoft Office 365, Google G Suite, and on-premises email with the industry’s most complete email security solution. Insulate users from spear phishing, credential theft and ransomware attacks by using Email Threat Isolation. Prevent insidious email threats such as spear phishing, ransomware, business email compromise and email spam. Stop spear phishing emails with multiple layers of protection, threat isolation, spam filtering, advanced security email analytics, built-in user awareness, education tools, and more. Block the latest ransomware with content defense, sandboxing, and link protection technologies that detect emerging, stealthy, and zero-day attacks. Defeat business email compromise with impersonation protection, sender authentication enforcement and brand protection controls. Protect your brand reputation by using automation to solve the practical issues of enforcing sender authentication (DMARC, DKIM and SPF) with Symantec Email Fraud Protection. -
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SpamJadoo
Data Infocom
Spamjadoo – Is world's First Antispam which is fully EAI (Email Address Internationalization) ready and IDN (Internationalized Domain Name) compliant software. The ULTIMATE spam eradication solution – presents a comprehensive and permanent fix to this problem. SpamJadoo is based on the revolutionary ESP (Eliminate Spam at Protocol level) technology, and presents a complete solution based on the privacy. ESP incorporates automated processes to build and update your trusted senders’ list. The innovative JMail concept allows you to create rule-bound mail addresses – you can give these out without compromising your privacy in all situations (e.g. subscribe to a newsletter, purchase online, put on your business card). The challenge/response process is another mechanism to validate the genuine sender. Many more thoughtful techniques have been incorporated. The result : email privacy without ever losing bona-fide mails. -
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CanIt-PRO
Roaring Penguin Software
CanIt-PRO is antispam email software designed for businesses of all sizes. For challenging e-mail environments that include enterprises, campuses, and ISPs. CanIt-PRO filters e-mail efficiently, effectively and affordably. With CanIt-PRO, administrators block spam by configuring the system and setting global policies centrally; then making them available to end-users, who enroll via a web interface. Providing extensive end-user controls, CanIt-PRO users can choose from a customizable list of spam filtering options such as high, medium, or low spam scanning, or choose the 'Expert Interface' for more granular controls. Available as either software or a plug-and-play "soft-appliance", CanIt-PRO includes anti-virus options and source code - providing the ultimate in customizability. -
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Kickbox
Kickbox
Test, monitor and optimize your email programs to reach more subscribers and increase your ROI with the #1 trusted email verification and all-in-one deliverability solution. Gain actionable insights by uncovering the health of your opt-in email lists to reduce bounces, protect your sender's reputation, and reach more high-quality subscribers. Prevent missed opportunities and increase your email ROI by connecting our real-time API wherever you collect email addresses online. Virtually eliminate hard bounces from fake, mistyped, or invalid email addresses. Monitor your sending domains and IP addresses for blocklistings. Real-time alerts allow you to quickly respond to resolve potential issues. Helps you determine whether your message is landing in the inbox or in spam by mailbox providers, like Gmail, Outlook and iCloud. Precheck email messages for content and design errors and spam filtering issues before sending. -
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Mailinblack
Mailinblack
Protect your business and employees against threats with the leading email protection solution in Europe. Mailinblack technologies combine artificial and human intelligence and have been recognised for more than 15 years by companies, health establishments and public institutions. Every year, 250 billion emails are sent worldwide, a large majority of which contain unwanted advertising. On average, your employees spend 5 hours per day working on emails, while 75% of them are spam. Mailinblack helps your employees, allowing them to save 40 minutes per day processing their emails. How? Our solution is designed to detect spam, newsletters and viruses, and to automatically sort the emails in your messaging system. You can finally take back control! 92% of enterprises have been victims of a cyberattack by ransomware, malware or attempted phishing. From data loss to financial damage, a tarnished reputation and wasted time, the impacts are serious and can even result in businesses going under. -
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ISnotSPAM
ISnotSPAM
Sending newsletters and email marketing is not easy. You need to work on the design, the graphics and the content. Being busy with all that work, you might forget to check if your content is set to trigger some spam filter which will send your hard work straight to the subscribers' spam folder. IsNotSpam online spam checker was created to help you test email and newsletter content, and alert if it is likely to trigger spam filters. 99.99% of email accounts use spam filters these days. Spam filters recognize spam messages by analyzing message content for spam characteristics. Sometimes these filters fail and mark legitimate emails as spam. Such emails are sent to the Spam folders and are not seen by the recipient. This filter failure is called a "false positive" as it marked a legitimate non-spam message as spam. Newsletter senders and email marketers need to check that their emails do not have spam characteristics in order to lower the risk of their newsletters being marked as spam. -
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Comodo Dome Antispam
Comodo Group
Secure Email Gateway is an enterprise anti-spam and threat prevention system that uses a sophisticated array of spam filters, anti-virus scanners and content analysis engines to prevent unsolicited mail from ever entering your network. Security needs differ from employee to employee. You may want to apply different security levels to different employees such as from finance or sales departments. Dome Anti-spam gives you the freedom to define different types of profiles with different security features and restrictions. Containment protects from the newest forms of ransomware, zero-malware, and other advanced threats. The Valkyrie file verdict system analyzes unknown files. Users are free to open, execute and use the attachments with ZERO risk of infection. Comodo's unique containment technology ensures that risks are fully contained before reaching the end point, so there is no risk of infection, even from the newest malware.Starting Price: $4.00/one-time/user -
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testmail.app
testmail.app
Get unlimited email addresses and mailboxes for automating end-to-end tests with our simple APIs. Email verifications, passwordless signins, etc. Are they triggering when expected? Are emails reaching the inbox? Never spam real customers by mistake - send your test emails to {namespace}.{tag}@inbox.testmail.app. Signup to get your {namespace}. The {tag} can be anything: each tag makes a separate email, so you can create unlimited real email addresses and mailboxes on the fly by simply changing the tag! Use any HTTP or GraphQL client of your choice in any language or environment including CI/CD pipelines. Take it further with awesome features like advanced search with wildcard match, "live" queries (waiting for new emails), sorting, pagination, attachments, SpamAssassin reports, and more. Together you can create separate namespaces (and mailboxes) for each project, securely provision and retrieve API keys, share test emails, monitor usage, and manage team membership.Starting Price: $9 per month -
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Bot Butcher
Bot Butcher
Bot Butcher is an API designed to help developers stop contact form spam bots on websites by automatically classifying incoming messages using artificial intelligence. When a visitor or automated system submits a message through a website’s contact form, the message can be sent to the Bot Butcher API along with contextual information such as the domain. It uses a fine-tuned large language model to analyze the content and determine whether the message is spam or legitimate within the context of the website’s topic. The API then returns a JSON response indicating the classification, allowing developers to automatically block spam or pass valid messages to the intended recipient or CRM system. This enables websites to filter unwanted bot traffic before it reaches inboxes, significantly reducing the amount of spam that site owners must handle.Starting Price: $1.99 per month -
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SMTP Provider
SMTP Provider
Experience the next level Email Marketing at an affordable price. Use a dedicated IP address to increase your sender reputation and avoid blacklisting of your IP due to someone else’s actions. Show that it’s really your own company and domain sending the message, and minimize the amount of messages that are marked spam by using the special cryptographic signatures SPF and DKIM. Our SMTP servers send your emails using secure SSL connection. Moreover, it's lightning fast. For each mailing list, you can discover the amount of messages sent out, the number of conversions made and links clicked, and many other details. Our SMTP service generates sending reports and delivery error reports. All reports can be downloaded to your computer. Your mailings won’t be sent to any addresses on the list of recipients who have unsubscribed, even if they are on a mailing list. Make sure that your emails are delivered to the inbox and not the spam folder. -
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SecureYourInbox
SecureYourInbox
Prevent unauthorized use of your email domain to protect people from spam, fraud, and phishing. SecureYourInbox's tools shows you who and what across the Internet is sending email using your email domain. SecureYourInbox's gives you access to the same modern plumbing that mega companies use to deliver email. Make your email easy to identify across the huge and growing footprint of DMARC capable receivers. You can instruct mailbox providers and receiving email systems to block any message that says it's from your domain but doesn't have email authentication technologies applied to it. With a DMARC policy, you can prevent unauthorized use of your email domain and block spam, fraud, and phishing attacks in order to protect your email subscribers and your brand. Receive alerts about DMARC issues, email volume spikes, problems with DKIM and SPF authentication, directly in your Slack, or email inbox. You get the right alerts at the right time! -
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Mailwarm
Mailwarm
Mailwarm : Automated Email Warmup & Deliverability Software Mailwarm is a cloud-based email warmup and deliverability platform designed to help businesses improve inbox placement and reduce spam filtering risks. Since 2020, Mailwarm has supported startups, sales teams, recruiters, agencies, and outbound marketers that rely on cold email and domain reputation management for growth. The platform strengthens sender reputation by generating consistent, natural engagement signals across multiple mailbox providers. Instead of relying on shortcuts, Mailwarm builds long-term trust with email providers through structured warmup automation. Mailwarm supports Gmail, Outlook, Microsoft 365, Yahoo, and custom SMTP configurations, making it suitable for teams launching new domains, onboarding new sales representatives, or managing multiple client inboxes.Starting Price: $69 per month -
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SMTP2GO
SMTP2GO
Send and track all emails easily and securely with SMTP2GO, a reliable outgoing email service solution. SMTP2GO features a redundant, multi data center infrastructure that allows users to send emails even if there is a major internet outage. SMTP2GO has features like real-time analytics, bounce/spam tracking, weekly summaries, spamtrap detection, blacklist monitoring, DKIM/SPF, and more.Starting Price: $10 per month -
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Spam Marshall
ITA Networks
Spam Marshall has kept Exchange servers spam-free since 2003, as hundreds of small and medium-sized businesses throughout the world have come to rely on Spam Marshall as their first line of defense in keeping corporate inboxes clean. Spam Marshall's proprietary Customs Rules Engine Technology (CuRE) is a leading-edge tool that prevents spam from infiltrating Exchange Servers on multiple fronts: SpamMarshall features include Real-time monitoring, Usage of content filters, Grey Listing, Anti Phishing, SPF Check, PTR Check, Incoming emails rate control, Domain type checks, Domain age check to name a few. Spa Marshall provides administrators with all the tools to customize filtering options. Spam Marshall is scalable, flexible and affordable and takes a few minutes to install. Licenses begin at only $749, and it runs seamlessly on Exchange 2000, 2003, 2007 and 2010 or any other SMTP Server. It is supported on Windows 2000, 2003, and 2008 and is available in both x386 and 64bit versions.Starting Price: $749 one-time payment -
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OpenText Core Email Continuity
OpenText
The OpenText Core Email Continuity solution ensures continuous access to email even when your primary mail infrastructure goes down, by automatically redirecting messaging to a secure web portal or Outlook via POP/IMAP, allowing users to read, reply, forward, compose, and send email normally during outages. It provides up to 30 days of stored inbound messages, preserving recent email history. During a mail-server outage, incoming messages are spooled at the spam filter, and users are automatically directed to the continuity service; once the primary server returns online, all email activity (sent items, replies, forwards, new messages) syncs back automatically to the main mailbox, preserving continuity. It requires no additional hardware, it auto-provisions through a central portal, and runs transparently until needed. Access can be from any device, anywhere, via web or standard email clients. -
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hMailServer
hMailServer
hMailServer is a free, open source, e-mail server for Microsoft Windows. It's used by Internet service providers, companies, governments, schools and enthusiasts in all parts of the world. It supports the common e-mail protocols (IMAP, SMTP and POP3) and can easily be integrated with many existing web mail systems. It has flexible score-based spam protection and can attach to your virus scanner to scan all incoming and outgoing email.Starting Price: Free
