Alternatives to KMail
Compare KMail alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to KMail in 2026. Compare features, ratings, user reviews, pricing, and more from KMail competitors and alternatives in order to make an informed decision for your business.
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1
Proton Mail
Proton AG
Proton Mail is the simplest way to protect your communications with built-in end-to-end encryption. Prevent data breaches, stay compliant with regulations like GDPR and HIPAA, and earn client trust. Protected by Swiss privacy laws and trusted by over 50,000 businesses, Proton Mail keeps your business data confidential and under your control. With Proton Mail and Calendar, your team can securely manage their inbox and schedule, while your organization maintains a professional presence with support for custom email domains and personalized branding. And with the Easy Switch tool, migrating from Google or Microsoft is seamless, no IT expertise required. -
2
eM Client
eM Client
Boost your email and skyrocket your productivity with the best email client for Windows and macOS. eM Client is a fully-featured email client with a clean and easy-to-use interface. It also offers features for calendars, tasks, contacts, notes, and chat. eM Client's compatibility is unmatched. You can connect to any email service – it will work. This email client works seamlessly with Google Workspace, Office 365, Outlook, Exchange and virtually all conceivable email technologies. Integrates with Online meeting tools such as Zoom, MS Teams, Google Meet and more. eM Client enhances email communication for professionals and home users alike. It is the only email app on the market with the full support of server-side rules and search, instant message translation, "Snooze email" and “Watch for reply” features + easy to use email encryption (PGP and S/MIME). It also works perfectly with Gmail, including support for tags and signature synchronization.Starting Price: $59.95 one-time fee -
3
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 -
4
Clyton
Gammadyne Corporation
Clyton is an email client with advanced security and spam filtering features. The spam filter is highly configurable and supports DNS blacklist checking (DNSBL). Expect 85% of spam to be eliminated with the default configuration. Email that is suspicious but not obviously spam is quarantined for 24 hours and then retested, providing the blacklist enough time to react to new spam sources. The built-in address book supports personalized mass-mailings. Received email cannot run scripts, download multimedia, or use embedded objects without your approval. Other features include encrypted storage, whitelisting, powerful HTML editor, attachment viewer, message drag and drop, custom message templates, SSL encryption, USB flash drive installation, and much more.Starting Price: $29 -
5
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. -
6
Mailpile
Mailpile
Mailpile is an effort to reclaim private communication on the Internet. A project to rescue our personal lives from the proprietary cloud and prevent our conversations from being strip-mined for corporate profit and government surveillance. Mailpile is taking e-mail back. Powerful search & tagging makes your pile of mail managable, whether you have just a few messages, thousands or even millions. Mailpile is designed to be fast and responsive, outperforming "the cloud" even on slow computers. And it works even when the Internet is down. OpenPGP signatures and encryption are part of Mailpile's core design, not an afterthought. Mailpile makes it easy to sign and encrypt your mail. It's ironic that most web-mail solutions filter out spam, only to replace it with their own advertisements. Mailpile has no ads. -
7
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 -
8
Rspamd
Rspamd
Rspamd has been started to handle mail flows that has grown over the last decade by more than ten times. From the very beginning of the project, Rspamd was oriented on highly loaded mail systems with development focus on performance and scan speed. Rspamd is written in plain C language and it uses a number of techniques to run fast especially on the modern hardware. On the other hand, it is possible to run Rspamd even on an embedded device with a very constrained environment. You can also check the recent performance analyze article to have a better impression about how fast Rspamd could be. Rspamd can be treated as a faster replacement for SpamAssassin mail filter with the ability to scan ten times more messages using the same rules (by means of SpamAssassin plugin). In the next graph, you can see how switch to Rspamd from SA helped to reduce CPU load on scanner machines. Rspamd can work with the most popular mail transfer systems, such as Postfix, Exim, Sendmail or Haraka. -
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Hornetsecurity Email Encryption
Hornetsecurity
Business emails often contain in-house, personal, or other sensitive content that could be intercepted and accessed without authorization if inadequately protected. Ensure all-around encrypted exchange of emails with Email Encryption from Hornetsecurity for reliable, secure email communication. Outgoing emails are automatically encrypted with one of the common encryption technologies (PGP, S/MIME, or TLS), depending on the set policy and availability of the corresponding certificates, without any further user intervention. If the sender’s public key is available, their emails are automatically decrypted and delivered to the recipient. Encryption of data has become a priority because of compliance requirements. In a business environment, the exchange of sensitive files and information takes place primarily via email communication. Encryption of the transmission path is essential to protect this data. -
10
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 -
11
Canary Mail
Canary Mail
Email, meet AI. Canary can write your emails, prioritize what needs attention, silence spam & much more. Say hello to your Inbox Copilot!Starting Price: $20/month -
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Atomic Mail
Atomic Mail
Atomic Mail is a secure and user-centric email hosting provider, dedicated to offering privacy-first email services. With features such as alias creation, robust security measures, and seamless account recovery, AtomicMail ensures your email experience is both private and hassle-free. Creation of Aliases (Hide-my-email): Maintain your privacy by creating multiple email aliases; Spam Free, No Ads; Email Password Protection; End-to-End Encryption: only you and your intended recipient can read the message; Zero Access Encryption: Atomic Mail cannot access your emails; Account Recovery with Seed Phrase: Recover access to your account with a unique seed phrase. Can regain control of your email account without compromising security.Starting Price: $0 -
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Letterbox
Letterbox
Who reads your mails? With regular mails you, the receiver, all mail providers and maybe others can read them. With end-to-end encrypted mails only the sender and the receivers can read them. Our iOS-App Letterbox makes end-to-end encryption easy to use, is compatible with most mail providers and supports the standard encryption protocol OpenPGP. Letterbox is similar to common mail apps but indicates the security state of incoming and outgoing mails. We disinguish between a confidential and insecure mails. Letterbox is a free open-source mail client on iOS and part of an ongoing research project at the Freie Universität Berlin, Germany. Letterbox is still under development but you can soon use the app on your device with Apple's TestFlight app.Starting Price: Free -
14
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. -
15
SquirrelMail
SquirrelMail
SquirrelMail is a standards-based webmail package written in PHP. It includes built-in pure PHP support for the IMAP and SMTP protocols, and all pages render in pure HTML 4.0 (with no JavaScript required) for maximum compatibility across browsers. It has very few requirements and is very easy to configure and install. SquirrelMail has all the functionality you would want from an email client, including strong MIME support, address books, and folder manipulation. The need arose in our organization for the access of email and address books from anywhere in the world. Obviously a web interface is ideal for this, given that the user has access to the Internet. After reviewing several open source projects we realized that we were going to need to do some fairly major customizations to get things to be a nice fit for our needs. -
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MsgSafe.io
MsgSafe.io
Instantly create as many email addresses as you need - each associated with their own group of contacts. Share addresses with anyone, but keep your real email address private. Stop telecom companies, governments, and hackers from seeing with whom you communicate. Each virtual mailbox is automatically set up with 4096-bit GPG and S/MIME encryption keys and certificates. All email stored at MsgSafe-io is encrypted. You can manage the encryption profile for each contact you communicate with. Protect your entire family or organization by managing all identities and email addresses with the domain you already own. If you don’t own a domain, you can use our domain registration services to purchase a domain integrated with MsgSafe-io and privacy protection. You don’t trust FaceTime, Skype, Duo, Hangouts and similar services hosted by companies like Apple, Microsoft and Google? Try our secure and private audio and video services. You can invite people to call you from a browser link.Starting Price: $5 per month -
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CounterMail
CounterMail
CounterMail is a secure and easy to use online email service, designed to provide maximum security and privacy without any unnecessary complexity. You can access your email account at any time, from anywhere in the world. Your account will always be encrypted and anonymous. CounterMail's encryption works automatically and transparently, it requires no specialized computer skills or knowledge. If you are comfortable using services like Hotmail or Gmail, you will be comfortable using CounterMail's secure email! We are using a strong encryption protocol called OpenPGP, with 4096 bits encryption keys to protect your data. To the best of publicly available information, there is no known method which will allow a person or group to break OpenPGP:s encryption by cryptographic or computational means. -
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Zoho Mail
Zoho
Secure email hosting for your business. Host your business email on a secure, encrypted, privacy-guaranteed, and ad-free email service. Zoho Mail's data centers have top-notch security and surveillance, with a reliable 99.9% uptime. Benefit from secure email hosting that supports encryption both at rest and end-to-end, along with S/MIME message encryption. Create a domain for your business and set up custom email addresses for users. Unique and professional email addresses give your company the visibility and authenticity it deserves. Zoho Mail's powerful Control Panel is the admin's go-to place for all settings, configuration, and customization. Add users, manage group aliases, set up policies to moderate business email content, and more. Retain emails across your organization for a specified period to comply with company standards and to counter legal attacks. e-Discovery helps discover such retained emails quickly.Starting Price: $2.00/month/user -
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K-9 Mail
K-9 Mail
K-9 Mail is designed for both novice and power users and offers lots of features for everyone. K-9 Mail has controllable debug logging. Users can activate logging to help diagnosing problems and errors. As an open source privacy-conscious project we don’t implement an always-on logging system that reports all the device’s activity to a central server. While this would make issues easier to fix it would also be costly to host the server and compromise the privacy of our users. Communication security is an increasingly important subject. K-9 Mail aims to provide intuitive e-mail security in many forms, both in terms of supporting secure login to your e-mail server and in the security of the e-mail itself. -
20
Echoworx
Echoworx
Echoworx is a fully managed, cloud-based SaaS email encryption solution trusted by businesses worldwide. It offers 8 secure delivery methods, supports 28 languages, and features 9 authentication options, enabling secure communication anywhere, on any device. Key Features: • Multiple Secure Delivery Methods: Web Portal, S/MIME, PGP, Secure PDF, Certificate Encryption, Secure Attachment (PDF, Office, ZIP), TLS with fallback • Free Proof of Concept (POC): Experience full functionality with a risk-free trial • 24/7 Technical Support • Extensive Branding Options • Message Tracking & Recall • End-to-End Deployment: Seamless integration and setup across platforms • Advanced Authentication: Full OAuth Access, Self-Registration, SMS, Shared Secret Passphrase, SSO, System-Generated Verification Codes, Passwordless, and Multi-Factor Authentication (MFA) • Accessibility by Design • Self-Service Account Management -
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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. -
22
MailAI
MailAI
MailAI is an AI-powered email-automation platform that deploys personal AI agents that run 24/7 in secure, isolated sandboxes to manage, respond to, and automate workflows in your inbox and calendar. Your agent can auto-respond to customer inquiries, monitor invoices via Stripe, coordinate meeting schedules, generate daily summaries of unread emails, and carry out custom tasks, all triggered by simple plain-English instructions. Built for enterprise-grade data security, MailAI integrates deeply with tools like Gmail, Google Calendar, and Stripe, and supports conversational interaction where you can ask your agent to “find all emails from Sarah about the Q4 deadline” or “schedule a check-in meeting and send the invite.” The system includes powerful features like inbox management, invoice and task tracking, email templates, performance-based workflows, and built-in compliance protections (CASA-verified sandboxes, encryption, GDPR/CCPA support).Starting Price: $25 per month -
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UltraMail24
UltraMail24
Create HTML email templates without HTML knowledge. Creating template is just like editing a letter in you favourite text editor. AntiSPAM test - Your email is analyzed for known spam keywords and the spam report shows you exactly what needs to be changed, ensuring your email is delivered to as many of your subscriber's inboxes (and not junk mail folder) as possible. Take a look at over 130 built-in HTML templates or design your very own. Select the template you like and replace the default content with your own texts, images and contacts. Popup and Inbox Previews - see exactly how your email will look before you send it. You can view a preview in your web browser or even email it to yourself. It is very important and necessary to segment a mailing list according to various criteria because your subscriber is interested in relevant and useful information.Starting Price: $9 per month -
24
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 -
25
Microsoft Outlook
Microsoft
Microsoft Outlook is the all-in-one email, calendar, and contact management platform designed to keep you organized and connected across your digital life. With Outlook, you can manage multiple accounts—including Gmail, Yahoo, and iCloud—within one unified inbox. Intelligent scheduling tools and shared calendars help you stay on top of meetings, events, and personal reminders. The built-in Microsoft Copilot assists with writing emails, summarizing long threads, and managing tasks to boost productivity. Outlook also offers enterprise-grade security, filtering out spam, phishing, and malware to keep your data safe. Whether on desktop, mobile, or web, Outlook helps you manage communication and time with clarity and confidence. -
26
Hexamail Flow
Hexamail
Hexamail Flow is a full email client, with calendaring, tasks and contacts. It operates with Office 365, Gmail, including modern authentication methods (OAUTH) works with Exchange on premises and all IMAP and POP3 servers. The GDPR data protection module offers email and office document redaction features including full PST file import, eml and msg file import, office document import and printing output or PDF generation of redacted content.Starting Price: Free -
27
StartMail
StartMail
StartMail is a secure, private email provider designed to protect your privacy. With StartMail, you can create disposable email addresses anytime, keeping your real inbox safe from spam. We believe privacy is a fundamental human right, and we’ve made it simple for you to protect yours. Even when your recipient doesn’t use encryption, you can still send password-protected messages with just one click. Our service complies with Dutch privacy laws—some of the strictest in the world—and adheres to European privacy standards. For professionals, StartMail also provides the option to secure your own domain with custom email addresses. No software downloads or installations are required; our easy setup gets you up and running in minutes.Starting Price: $35.93 per year -
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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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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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Proofpoint Email Protection
Proofpoint
Proofpoint Email Protection solutions—deployed as a cloud service or on-premises—protect against malware and threats that don't involve malware, including impostor email, or business email compromise (BEC). Granular email filtering controls spam, bulk "graymail" and another unwanted email. And continuity capabilities keep email communications flowing when your email server fails. Proofpoint Email Protection is the industry-leading email gateway, which can be deployed as a cloud service or on premises. It catches both known and unknown threats that others miss. Powered by NexusAI, our advanced machine learning technology, Email Protection accurately classifies various types of email. And it detects and blocks threats that don’t involve malicious payload, such as impostor email—also known as business email compromise (BEC)—using our Advanced BEC Defense. You can also automatically tag suspicious email to help raise user awareness. And you can track down any email in seconds. -
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EuropeanMX
Eunetic
Protects your email communication from spam and viruses. EuropeanMX offers all-around spam protection as a cloud-hosted easy to set up "Software as a Service" solution, completely without expensive software installation on your servers or clients. Use our easy to set up SaaS solution as a reliable spam and malware filter. Our high-performance filter offers nearly 100% accuracy and virtually no false positives. Protect your IP ranges and prevent getting blacklisted. Automatically lock hijacked email accounts, block outgoing spam, and be informed about any suspicious activity. Continuously archive your emails to have a rotating backup at hand. Our archiving solution works in accordance with the current legal directives of the European Union. Strengthen the native security of Microsoft Office 365 or Microsoft Exchange with the sophisticated level of protection and scalability EuropeanMX offers. -
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OpenText GroupWise
OpenText
OpenText GroupWise is a secure, enterprise-grade messaging and collaboration platform that combines email, calendaring, contacts, and scheduling into a single, flexible system. It is built for organizations that require strong security, compliance, and reliability across highly regulated industries such as government, education, utilities, and healthcare. The platform enables teams to customize the user interface, integrate with systems like Microsoft Exchange and Active Directory, and centrally manage contacts, address books, and shared calendars. GroupWise includes intelligent scheduling tools, travel-time adjustments, and collaboration features that help streamline workflows and improve daily productivity. Its security measures—such as multifactor authentication, encryption, and gateway protection—ensure that sensitive communications stay protected. -
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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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INKY
INKY Technology
INKY is an award-winning cloud-based email protection software. It blocks spam, malware, and most importantly — it protects businesses from phishing attacks like no other email security solution can. INKY uses domain-specific machine learning and computer vision to identify and block zero-day phishing emails that get through legacy email systems. Warning banners directly in the email offer guidance for suspicious emails. Integrates into Office 365 organization-wide within minutes. Safe/Unusual/Malicious warnings let users know how to treat the email. Our advanced dashboard gives you complete visibility and tracking into the threats being blocked. INKY’s email protection software places user-friendly warnings directly into the email, offering specific guidance to both protect and educate your users. Safe/Unusual/Malicious warnings with details guide the user to take a closer look or proceed cautiously. One of our clients’ favorite features is the ability to Report an Email with a click. -
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sslTrus
NicSRS Pte. Ltd
sslTrus offers industry-leading digital certificate solutions, encompassing products like SSL certificates, S/MIME certificates, code signing certificates, private CA, IAM, and email encryption solutions, all providing robust support for your information and network security! Additionally, sslTrus provides certificate lifecycle management, an automation solution for overseeing the entire lifecycle of SSL certificates. It seamlessly automates tasks such as automatic renewal, push, deployment, discovery, monitoring, and alerting for SSL certificates. This not only enhances management efficiency but also significantly mitigates security risks, catering to all enterprises SSL certificate needs across diverse scenarios and enabling comprehensive, automated SSL certificate management.Starting Price: $3.99 -
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InterScan Messaging Security
Trend Micro
Trend Micro™ InterScan™ Messaging Security provides the most comprehensive protection against both traditional and targeted attacks. Using the correlated intelligence from Trend Micro™ Smart Protection Network™ and optional sandbox execution analysis, it blocks spam, phishing, and advanced persistent threats (APTs). The included hybrid SaaS deployment option combines a powerful gateway virtual appliance with a SaaS prefilter that stops majority of threats and spam in the cloud—closer to their source. This hybrid solution delivers the best of both worlds: the privacy and control of an on-premises appliance with an in-the-cloud pre-filter for resource efficiency and proactive protection. The Data Privacy and Encryption Module solves the toughest regulatory compliance and data protection challenges by securing outbound data. This optional module offers easy-to-use identity-based encryption and customizable data loss prevention (DLP) templates for quick deployment. -
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Mailtrim
Mailtrim
Reinventing email to live in your inbox! A powerful standout mail tool to send and receive organised email communications. Sync all your emails Manage all your emails and contacts from multiple accounts easily in one unified inbox. Best free email client. Highly customisation. Give a new look to your email with the finest outlook alternative, the mailtrim. Choose from a ton of customizations to send a unique type of business email. Best free email client. Secure and private. Have round-the-clock control on the emails you send and receive! Acquire this secure email client and apply pgp encryption to hide the contents of your emails. Sophisticated and slick UI. Have high user-experience with a minimally designed interface. Find everything fast! Have this best free email client for personal and professional use that has an easy-to-navigate immersive user interface. The quick to use email client for windows and mac allows the users to send smart emails.Starting Price: Free -
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Group-IB Business Email Protection
Group-IB
For cyber criminals, an email gateway is an ideal attack vector because it can bypass traditional email security systems with relative ease, putting organizations at serious risk. Once a single corporate email account is breached, the entire organization is vulnerable. That’s why secure email gateways are a crucial defense for locking cybercriminals out of your system. As cyberattacks become increasingly sophisticated, your organization needs to implement email security best practices for protecting email accounts and preventing damaging data breaches, financial losses, and legal risks. Group-IB Business Email Protection leverages patented technologies and industry-leading threat intelligence to detect, block, and analyze all email-borne attacks, from spam and phishing attempts to malware delivery and business email compromise (BEC) attacks. Recursively analyze suspicious URLs, attachments, and objects. -
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Warmy
Warmy
Warmy.io is a tool designed to enhance email deliverability by raising your email reputation to ensure your emails avoid the spam folder. The platform offers automated warm-up with the help of "Adeline", their AI engine. Users can connect their mailbox and let the system warm it up at an optimal pace, analyzing hundreds of parameters daily, interacting with real people on your behalf, and ensuring your emails reach the inbox. Additionally, emails sent through Warmy.io are automatically opened, marked as important, and taken out of the spam folder, boosting the sender's reputation. The platform provides a clear and transparent process, allowing users to stay informed and in control with tools like the Email Deliverability Checker, Email Health Checker, and Email Template Checker. The website showcases testimonials from satisfied customers and offers a 7-day trial without the need for a credit card.Starting Price: $49 per mailbox per month -
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Fastmail
Fastmail
Email you can feel good about. features you’ll love. You get 100% of our efforts and expert support when you need it. Email holds the details of your life. Here, your story is protected, not monetized. Thoughtful and speedy email, calendars, and contacts; all ad-free. Built with you in mind, you’ll love our intelligent features. Internet companies use your data as a way to get rich. But it doesn’t have to be this way. Take back your privacy and get a better email experience. With your email on your side, you spend more time doing what you love. Use Fastmail in your web browser, on mobile devices, and on desktop apps (Outlook, Thunderbird, Mac Mail). Breeze through your day with email, calendars, and contacts all in one app. Seamlessly import your data. Keep your life organized with a full-featured inbox. Bring all your calendars together. Share with your favorite people. Use your custom domain, and own your email address forever.Starting Price: $3 per user per month -
41
Amazon WorkMail
Amazon
Amazon WorkMail is a secure, managed business email and calendar service with support for existing desktop and mobile email client applications. Amazon WorkMail gives users the ability to seamlessly access their email, contacts, and calendars using the client application of their choice, including Microsoft Outlook, native iOS and Android email applications, any client application supporting the IMAP protocol, or directly through a web browser. You can integrate Amazon WorkMail with your existing corporate directory, use email journaling to meet compliance requirements, and control both the keys that encrypt your data and the location in which your data is stored. You can also set up interoperability with Microsoft Exchange Server, and programmatically manage users, groups, and resources using the Amazon WorkMail SDK. Amazon WorkMail features simple, low, monthly per-user pricing and costs $4 per user per month which includes 50GB of storage per user.Starting Price: $4 per user month -
42
Mail Pilot
Mail Pilot
Mail Pilot is a privacy-first email app designed to help users manage email fatigue and declutter their inboxes. With a clean, focused interface, it allows users to prioritize their most important messages while organizing others into a calm, manageable workflow. Mail Pilot supports all standard IMAP email servers and ensures your emails stay on your device, avoiding third-party servers. The app is native to macOS and offers an intuitive task-based approach to handling emails. Users can sort emails into actionable tasks, schedule messages, and archive emails with ease, all while maintaining an emphasis on privacy and simplicity. The app’s streamlined design has received praise for making email management both efficient and visually appealing. Additionally, Mail Pilot provides a secure environment for managing personal and professional correspondence, ensuring that users can control their inboxes without feeling overwhelmed. -
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Mailfence
Mailfence
Mailfence is an encrypted email service that offers OpenPGP based end-to-end encryption and digital signatures. Mailfence comes with a plethora of features that boost collaboration without compromising security and convenience. Mailfence documents allow you to safely store and edit documents, you can also share docs with your team with the push of a button. Mailfence calendar will keep your tasks, meetings, and events all in one secure place. Mailfence contacts will store your contacts and it will give you the ability to create mailing lists to maximize efficiency. We designed Mailfence to be a fully interoperable suite, which means you can synchronize Mailfence with most services out there. Mailfence business offers fully customizable whitelabel versions of the Mailfence interface. To put the cherry on top, Mailfence donates 15% of revenues of PRO subscriptions to IFF and EDRI to bolster the fight for Online privacy.Starting Price: $2.50/month/user -
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LeadSparrow
LeadSparrow
LeadSparrow's drag & drop email designer enables you to build beautiful mobile-friendly emails in seconds. You do not need to start from scratch. Our email designer comes with pre-designed email templates to get you started quickly. Put your email in context. Personalize your email for higher conversion rate. With powerful merge tags, personalization is simply inserting the right tag at the right place in your email. Got more than one brilliant idea for your next marketing email. Run A/B Test to find out the winning formula. A/B Test your subject line, sender name or call-to-action for higher engagements. Say goodbye to "check your spam folder" reminders. With innovative Smart Spam Checker, your emails always hit the inbox. Make sure to run everything through spam checker for confirmed inbox delivery.Starting Price: $29 per month -
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Zero
Zero
Zero is an open source email application designed to prioritize user privacy and security, offering a customizable email experience. It allows users to manage their emails across various categories, such as primary, important, personal, updates, and promotions, enabling efficient organization and navigation. As an open source solution, Zero encourages community collaboration and transparency, inviting users to contribute to its development and enhancement.Starting Price: Free -
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Barracuda Spam Firewall
Barracuda
Spam, malicious email and virus attacks are becoming ever more sophisticated. Your corporate email is a gateway that can allow sensitive information to be destroyed or lost as well as for attacks that can hurt your network performance and employee productivity. The Barracuda Spam Firewall scans email and incoming files using three layers of powerful virus scanning technology. The firewall connects to the Barracuda Security Cloud to for the most up-to-date protection against the latest email-borne threats. Threats do not always come from the outside. The firewall also checks for internally tainted email to prevent the spread of viruses that don’t access the email gateway. Barracuda is the industry leader in spam protection for businesses. The Barracuda Spam Firewall leverages Barracuda Central to identify email from known spammers and determine whether domains embedded within emails lead to known spam or malware sites.Starting Price: $699.99/one-time -
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eDataSource
eDataSource
The most comprehensive email deliverability suite in the industry has just been supercharged. Powered by live feedback from nearly 500 million Cloudmark-protected consumers, Inbox Tracker Cloudmark Edition gives you unprecedented access to email delivery intelligence. Go far beyond simply calculating your spam score. Find out why your emails are sent to the spam folder so you can pinpoint and correct delivery issues with near-surgical precision. The first of its kind, Competitive Tracker is the most powerful, comprehensive, accurate search tool on the market today for delivering email marketing intelligence. Using insights from real consumer inboxes, it returns information and insights quickly, without compromising depth or detail, so you can compete more effectively in the inbox. Competitive Tracker offers flexible search capabilities, alert functionality, and fully customizable charts and reports. -
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Portabella
Portabella
Simple, privacy friendly project management for students. Kanban boards, tasks, calendars, file sharing and more. Continue scrolling for the privacy preserving future. No personal or third party data tracking. Portabella contains no third party tracking scripts or pixels. Your movements and actions are never mined for insights, you are not the product. End-to-end encrypted. Your data is safe and sound via a combination of AES and ECIES encryption. All cryptographic operations happen in your browser so no one except you or your team can see your data . Shareable. When you need privacy and encryption are at the forefront of Portabella, but sometimes you want to show off your work to the world. Easily decrypt and set your project as public for the world to see . No email spam. We will never send you emails that you haven't explicitly opted into. We have no promotional campaigns or prompts to engage with our platform, we simply don't believe in them.Starting Price: $9.99 per user, per month -
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Ciphermail Appliance
in-put
Email encryption with CipherMail Most emails are sent in plain text. This means that anyone who has access to the data stream can read the content of the emails. This is unacceptable for most companies, institutions and organizations and may also violate applicable law. E-mail encryption ensures security and trust in communication. CipherMail is a central mail transfer agent (MTA) that works on the “store and forward” principle. Incoming e-mails, regardless of whether they are from internal or external sources, are only saved until they have been encrypted / decrypted and can be forwarded to the recipient. This happens without changing the email client and is possible in combination with any SMTP server! E-mail encryption can be done using S / MIME, PGP or in a PDF file - in principle or triggered by a trigger in the subject line. CipherMail also includes a Data Leak Prevention (DLP) module.Starting Price: $670 one-time payment -
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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.
