Alternatives to SocketLabs
Compare SocketLabs alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to SocketLabs in 2026. Compare features, ratings, user reviews, pricing, and more from SocketLabs competitors and alternatives in order to make an informed decision for your business.
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1
ActiveCampaign
ActiveCampaign
ActiveCampaign is the autonomous marketing platform that transforms how marketers, agencies, and business owners work. Use Active Intelligence to power goal-aware automations and orchestrate personalized experiences across email, SMS, and WhatsApp. Within a single tool, you get real-time reporting and proactive optimizations in addition to market-leading deliverability and integration with 1000+ apps. With a user-friendly interface and a comprehensive suite of features, ActiveCampaign's platform is powerful, accessible, and designed to scale with your business. It's also easy to get started: While traditional tools force teams through long setup cycles and training, ActiveCampaign delivers measurable lifts in engagement and conversions in days. 89% of surveyed customers say the platform meets their business needs better than the competition, and 88% say ActiveCampaign delivers value faster than competitors. Read our ROI report for methodology -
2
SendGrid
Twilio SendGrid
Email is the backbone of your customer engagement. The Twilio SendGrid Email API is the email service trusted by developers and marketers for time-savings, scalability, and delivery expertise. Our flexible Email API and proprietary Mail Transfer Agent (MTA), intuitive console, powerful features, and email experts make it easy to ensure all your email gets delivered in seconds and without interruption. Monitor engagement data and optimize deliverability with our Deliverability Insights dashboard. Whether you’re sending 100 emails or 100 billion, SendGrid is built to scale. Integrate with our RESTful APIs and SMTP in minutes, with sample code libraries available in 7 languages, interactive docs, templates, and more.Starting Price: $19.95 per month -
3
Bouncer
Bouncer
Bouncer - The easiest to use yet the most powerful E-mail Validation and deliverability Service. Bouncer is a fortress-like secure (GDPR compliant) Email Verification and Deliverability platform trusted by thousands of companies from 6 continents. The platform was founded in 2017 with a simple mission to improve human-to-human e-mail communication and help people get and stay connected via the e-mail channel. Bouncer is a technological leader in the e-mail verification market. Both list and API verification are top-notch mechanisms with a zero downtime policy. The product has the best coverage and high performance (up to 200,000 verified e-mails per hour per customer). To be a more complex solution for both Enterprise and SMB segments, the product has additional features like e-mail Toxicity Check and Deliverability Kit, so users can take care of and improve their deliverability. Bouncer also has a vast integrations library.Starting Price: $8.00/one-time -
4
Critical Impact
Critical Impact
Critical Impact allows you to enhance and simplify your email marketing campaigns. Our tools let you effectively manage your email and SMS lists, send personalized and automated emails, along with text messages (SMS) for your marketing campaigns all at a competitive price model. Our subscriber scoring algorithms will mine your data to quickly identify those subscribers who are most likely to read your next email, consume additional emails, or make another purchase. With our easy-to-use interface, you can schedule messages to send in minutes. Select your send options all on one page, and then prevent mistakes by seeing a confirmation of all your send details. Even A/B test your email across device screens – from phones to tablets to monitors. -
5
GlockApps
GlockApps
Where are your emails delivered? Receive reports with an in-depth understanding of what your emails are doing and how to increase your reputation and deliverability before you hit Send! In your reports you can: ❖ Check to see if your sending IPs or Domains are listed within 50+ major email blacklists. ❖ Protect your identity by identifying, monitoring, and rejecting unauthenticated outgoing emails. ❖ Identify whether your email’s content or reputation is being flagged as Spam by all major B2B and B2C email marketing providers. ❖ Fix HTML errors and identify “risky” content before sending. ❖ Get instantly notified when issues occur by email, Slack, or Telegram. Want to speak with an expert? Book a 1-hour consulting call to get all your email marketing and deliverability questions answered. We also offer comprehensive Email Deliverability Audits with personalized recommendations for companies looking to maximize their revenue with email.Starting Price: $9 per month -
6
SMTP.com
Ziff Davis
Reliable SMTP relay and email delivery services. Powerful email delivery services that enable you to send and track high volume emails effortlessly. Integrate and start sending in minutes. All your transactional, email relay and email delivery needs under one roof. Whether you need a low-latency email delivery provider for your transactional emails, scalable infrastructure for high-volume sends or reliable backend solution for your marketing campaigns, SMTP is built to deliver. Reputation Defender is SMTP’s proprietary technology that uses big data to proactively monitor your email list health and safeguard your domain and IP reputation among ISPs by suppressing bad emails in your sends from hard and soft bounces. This ensures your delivery rates and inbox placement incrementally gets better over time.Starting Price: $25 per month -
7
KumoMTA
Kumo Corp
KumoMTA is an Open-Source, enterprise-grade email message transfer agent (MTA) software for sending high-volume, business-critical emails. KumoMTA is typically chosen by high-volume email users looking to replace PowerMTA, Momentum, or traditional Open Source MTAs. KumoMTA offers high-performance message relay to the tune of millions of messages per hour per server, combined with extreme flexibility and configurability through its use of a Lua scripting engine for configuration and message management. For more information on KumoMTA see our Sourceforge project page.Starting Price: $0 -
8
Netcore Email API
Netcore
Choose the best email API or SMTP for the most robust email delivery experience. Netcore Email API (formerly known as Pepipost) provides a powerful transactional email delivery infrastructure and AI-powered inboxing which is reliable, scalable, secure and easy-to-use, at the most affordable pricing plans. We help brands to engage with their customers at the right moment with the right content over emails.Starting Price: $25 per month -
9
turboSMTP
turboSMTP
TurboSMTP understands that email is not just a means of communication but the backbone of your customer engagement strategy. TurboSMTP Email API is trusted by developers and marketers alike for its time-saving features, scalability, and delivery expertise. Our service offers a flexible SMTP relay solution along with advanced features tailored to meet the needs of businesses of all sizes. With our intuitive dashboard, powerful features, and dedicated support, ensuring the delivery of your emails is seamless and uninterrupted. TurboSMTP's infrastructure is built to scale, whether you're sending a few hundred emails or millions. Integration with our service is effortless, with sample code libraries available in multiple languages, interactive documentation, and customizable templates. Monitor engagement data and optimize deliverability with our comprehensive reporting tools. Trust TurboSMTP to deliver your emails reliably and efficiently, empowering you to engage with your audience.Starting Price: $14.95 per month -
10
Maileroo
Maileroo
At Maileroo, we provide a powerful platform for both SMTP relay and email marketing. We ensure fast, reliable email sending with real-time tracking of deliveries, clicks, opens, and bounce rates. With our free Email Verification API, dedicated IPs, and DNS Records for sender authentication, we help reduce bounced emails and improve deliverability. Our email marketing platform makes it easy to create and manage campaigns. You can personalize emails, use our drag-and-drop email templates, form builders, and flexible Contacts API. We provide real-time statistics and in-depth analytics to help you optimize your campaigns and boost engagement. We also offer seamless DNS setup, automation tools, multi-sender identities, and efficient contact management. Whether you're a small business or growing enterprise, Maileroo offers budget-friendly pricing and everything you need to scale your email marketing, making it a smart choice for businesses of all sizes.Starting Price: $10 per month (25,000 emails) -
11
MailerSend
MailerSend
MailerSend is a transactional email and SMS service designed for developers to work faster and smarter. A drag & drop builder and dynamic templates enable anyone at any skill level to create personalized transactional emails, while our SMS templates help you create professional transactional SMS messages. MailerSend’s advanced infrastructure scales with your sendings, while the latest security protocols protect your sender reputation. Plus, you can integrate your email sending and tracking in your apps using SMTP or a flexible email API. Built by deliverability experts, and with the inbuilt email verification tool, you can rest easy knowing your messages will be delivered and avoid spam folders, while dedicated IPs are available for high-volume senders. Plus, inbound routing enables your customers to interact with your messages, sparking conversations and increasing engagement. Get started for FREE with 500 emails, then upgrade for as little as $7/month for up to 5000 emails.Starting Price: Free -
12
Flowmailer
Flowmailer
-- The email engine you can build on -- We're everything that happens under the hood of your email communications. Reliable Email API with endless capabilities & features ready for integration. Flowmailer's Email Engine provides all the tools you need to build a professional email strategy. From marketing to customer support, from account management to warehousing, every email sent is valuable. Where others choose to focus on an email's looks rather than its performance - we opt for solid email deliverability first. Every email that hits the inbox is a valuable moment between you and your customer. Email Engines change the way we send emails. Ready to create the unparalleled email experience your customers deserve?Starting Price: €89 per month -
13
Bird
Bird
Bird (formerly MessageBird) is the next-generation CRM for Marketing, Sales, and Payments, powering over 5 trillion annual messages across Email, SMS, and WhatsApp. Leading brands grow cost-efficiently with Bird through personalized interactions on Email, SMS, and WhatsApp. The world's most innovative companies build communication solutions using Bird's applications and APIs. Get started today and talk to your customers over any channel, for any use case, anywhere in the world. Marketing messages, push notifications, order updates, delivery alerts and more. Operational bottlenecks slowing your growth? Use automated conversations and workflows to collect critical information up front, reduce manual tasks, implement self-service flows, and route chats to the right agent. Get up and running in minutes on our reliable, auto-scaling APIs with extensive documentations, complete API references and intuitive SDKs.Starting Price: $45 per month -
14
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 -
15
UniOne
ECOMZ Holding
Up to 5 million outgoing emails per hour. 99.8% of your emails will arrive at their destination. Feel like you might need a dedicated IP? Let us know and we’ll provide one, while also keeping an eye on the performance and stability of our shared IP pools. Get started with Web API or SMTP in minutes. GDPR compliant. No sensitive data to upload, just make a request to send an email and get the statistics back. UniOne has no personal information stored on our servers. Check your email statistics, keep an eye on delivery rates, openings, click-throughs, and unsubscriptions to manage your contacts more effectively. If you find your results are low, UniOne will make a few recommendations as to how to fix this. Running out? The system will let you know when your monthly plan is going to expire. You can also add multiple notification addresses so your IT team will be updated with recent reports or invite your teammates as shared access members to manage the account together.Starting Price: $4/month/6,000 emails -
16
Postmastery
Postmastery
Postmastery provides a platform for professional email monitoring that goes far beyond the obvious ‘click & open’ statistics. Postmastery’s Delivery Analytics platform processes SMTP delivery data from both on-premises mail servers and SMTP providers. It reads data from Microsoft SNDS, Return Path Sender Score and relevant blacklists. Users have access to real time dashboards and receive automatic alerts. High bounce rates, increased delivery times, junk foldering or blacklisting are serious problems in email marketing and they impact your business. Since they affect your reputation , it's best to stay ahead of them. Postmastery offers a baseline for improvement and carries out an email delivery assessment. And, if needed, our specialists provide hands-on support at infrastructure level as well. Focus on your core business and outsource your delivery monitoring to Postmastery. Email delivery experience, expertise and tooling is at your disposal via our 'email delivery control centre'. -
17
Mailchimp Transactional Email (Mandrill)
Mailchimp
Transactional emails: Reach inboxes when it matters most. Deliver fast, personalized transactional emails using API or SMTP. Get the benefits of our experience sending billions of emails globally. Send personalized transactional emails that reach inboxes, not spam folders. Customize your analytics with pre-built dashboards, export API, and more. Read documentation guides, or contact our award-winning Support team for help. Use custom tagging, whitelabeling, conditional content, and more. Globally distributed infrastructure: Featuring automatic SPAM loop registration and pre-warmed dedicated IPs. Get analytics in multiple ways, plus custom tags, A/B test capabilities, and comparative reports. Utilize white-labelled click tracking, custom reverse DNS, rules engine, custom return path, and sub-accounts. That’s the average time to delivery for top 3 ISPs, sent from our MTAs to the recipient’s email server. -
18
Postmark
ActiveCampaign
ActiveCampaign Postmark is the email delivery service that developers and product teams actually like. Send transactional and marketing emails and get them to the inbox, every time. Postmark maintains one of the best delivery reputations in the industry by routing transactional and promotional messages through parallel but separate sending infrastructure.Starting Price: $10/month for 10,000 emails -
19
Amazon SES
Amazon
Amazon Simple Email Service (SES) is a cost-effective, flexible, and scalable email service that enables developers to send mail from within any application. You can configure Amazon SES quickly to support several email use cases, including transactional, marketing, or mass email communications. Amazon SES's flexible IP deployment and email authentication options help drive higher deliverability and protect sender reputation, while sending analytics measure the impact of each email. With Amazon SES, you can send email securely, globally, and at scale. Using either the Amazon SES console, APIs, or SMTP, you can configure email sending in minutes. Amazon SES also supports email receiving, enabling you to interact with your customers at scale. Regardless of use case or sending volume, you only pay for what you use with Amazon SES.Starting Price: $0.10 per month -
20
PowerMTA
Bird
PowerMTA is an enterprise-grade email message transfer agent (MTA) software for sending high-volume, business-critical emails. PowerMTA can be run on your own server or in any public cloud such as Amazon Web Services or Microsoft Azure. With unmatched reliability and powerful analytics, PowerMTA gives you total control of your email sending. Improve performance, deliverability, and team efficiency with a simple set up, a small hardware footprint, and robust analytics. Try PowerMTA with Signals today, with volume pricing starting at $8,000 per year. PowerMTA includes SparkPost Signals, offering a complete view of your email sending. Analyze per-domain, per-campaign, and even per-recipient performance, allowing you to optimize your sending and prevent problems before they occur. PowerMTA provides unsurpassed delivery and performance in a stable SMTP environment. High-speed sending with total control.Starting Price: $8000 per year -
21
Migomail
Migomail
Using an SMTP relay service like Miogmail is the simplest way to get started sending marketing and transactional emails. Send emails as per specific action or send series based bulk email relentlessly. Design creative customize email templates using drag-drop editor or use readymade responsive template. Security is Security is first priority, secure email infrastructure integration with SSL, DKIM, DMARC, SPF, SSL, TLS. Increase your email delivery with advanced management tools and Dedicated IP address. Create professional-looking personalized transactional, promotional and newsletter email. Utilize transactional/promotional SMTP or SMTP API to send bulk email. -
22
SendPulse
SendPulse
A multi-channel marketing automation platform designed to help marketers create personalized promotional campaigns. Users can choose between email, SMS, and web push notification or build an elaborate message sequence by combining several channels in a single campaign. When it comes to email marketing, the platform packs all the necessary tools to automate lead nurturing and lead generation. Users can create custom subscription forms and grow their mailing list. Intuitive drag and drop allows users to design mobile-friendly email templates or choose a predesigned one from a massive gallery. The company, also, offers a transactional email service that users can use to send up to 12000 free emails via SMTP or API. SendPulse has its own chatbot builder. Users can create a Facebook Messenger chatbot or a Telegram chatbot and use it to send personalized campaigns or as an autoresponder.Starting Price: $9 per month -
23
Bit SMTP
Bit Apps
Many site owners face the spam mail problem for using the WordPress default PHP mail function. There may be some restrictions when it comes to mail service: sometimes emails are not delivered, sites cross the limit of outgoing mail. Bit SMTP plugin allows you to authenticate the mail service of your site by configuring the SMTP server of your desired mail service. SMTP is a protocol that helps your WordPress site make its email deliverability more easygoing & reliable. By enabling this feature, you can send mail from your site to your recipients via your preferred mail server. -
24
Mailjet
Sinch
The email solution for fast-moving teams. We know how hard it can be to find an affordable and effective email service. Mailjet is the perfect solution for your needs, our advanced features help you grow your business at a very reasonable price. Effortlessly craft beautifully responsive email in just a few clicks with our email editor, Passport. Use our rich library of free email templates or create your own design from scratch. Use Mailjet’s Collaboration Toolkit to work on the same email template or campaign in real time to increase your team’s efficiency. Drastically shorten feedback cycle with commenting and approval workflow features to go faster. Personalize each email with customer data you collect and segment your contact list to send the right content to the right customer. It’s easy to make each of your recipients feel special. Optimize the performance of your campaign with real-time statistics available with each sending.Starting Price: $9.65 per month -
25
EmailLabs
Vercom
EmailLabs is part of the Vercom S.A Group, which implements technology solutions in the CPaaS model. We are a cloud SMTP server infrastructure: Cloud SMTP & Email API. With years of experience in sending to the most informed senders, we can make a measurable contribution to building email reputation and improving deliverability. We take care of standardization and security of both marketing, transactional and system messages of our customers. Thanks to the in-depth knowledge of our experts, we are able to prepare the infrastructure to ensure appropriate throughput and increase the sending speed for any market and any mailbox provider. Plug EmailLabs into your transactional sends - start sending in less than 5 minutes.Starting Price: Free -
26
Kingmailer
KingSMTP.com
KingSMTP.com (formerly known as Kingmailer.co, founded in 2017) is a Transactional SMTP service provider. It’s designed to help businesses reliably send emails such as order confirmations, password resets, or notifications, but it’s not intended for mass email campaigns or marketing.Starting Price: $0 per month -
27
Inboxroad
Inboxroad
Ensure your emails get delivered to your users. Scale up to 10M+ emails per month with our powerful SMTP infrastructure and robust API. Enjoy personal weekly advice in your mailbox. Our email expert offers you a weekly delivery report full of tips and optimizations. Get 24/7 support and monitoring. Reach us day and night through Whatsapp, phone or email. We are there to help when you need us. Don’t get lost in irrelevant data. Get a quick summary of your deliverability and find out specific bottlenecks. Instantly see how well your doing in terms of email deliverability. Select your last week, month or custom period of time. Optimize your delivery rate with detailed insights about bounces, deliveries & more. Pinpoint bottlenecks quickly. You receive weekly personal, actionable advice to optimize your email delivery rate further. Our experts monitor your email delivery 24/7 to make sure everything’s okay.Starting Price: €59 per month -
28
Coresender
Coresender
We get your emails delivered in seconds. Your customers never have to wait for the emails they are expecting or need immediately, like password resets, order confirmations etc. We do all the hard work to place your emails straight in your recipient’s inbox, so you can focus on delighting even more customers and growing your business. Transactional emails, such as password resets, email confirmation links, order receipts must be delivered immediately. We ensure that they are always our top priority. That’s why we’ve separated our sending infrastructure, to ensure this priority. When you use a transactional sending account, you know your most important emails will never be affected even by the biggest of your email marketing campaigns. Your sender reputation is critical for email delivery and should always be your concern. We work with you every step of the way to improve your sender reputation score and keep it at a high level. -
29
Mailcot
Mailcot
Email Marketing Services allows your business to email the consumer whenever you want. While not every email needs to be a sales pitch, your contact with the customer should provide something of value to them. If you are looking for a Transactional SMTP service, then you probably have an application that sends out either marketing or transactional messages and is searching for a host to relay these messages in bulk. Create fully automated campaigns with the world’s most intuitive workflow builder. Apply tags, trigger campaigns, add delays, branch with if-then logic, and do about 30 other things. With powerful functionality that allows businesses to move quickly. Drive more sales with email marketing that really resonates. Nurturing your leads with our platform , give points and covert it from lead to customers.Starting Price: $7.19 per month -
30
Brevo
Brevo
Say hello to Brevo (formerly Sendinblue) — the platform that helps you build customer relationships across Email, SMS, Chat, and more. The complete toolkit to turn one-time browsers into long-term customers. Connect with contacts directly in their inbox with beautifully designed email campaigns. Send targeted messages that land straight in your customers' pockets. Brevo empowers businesses to build and grow relationships through marketing automation, email campaigns, transactional emails and SMS messages. What makes us different? Brevo is powered by our world-class customer happiness team and we offer pricing plans guaranteed to make you smile. Our platform combines a robust suite of services within a single, user-friendly solution. Happy Sending!Starting Price: €25 per month -
31
Warmup Inbox
Warmup Inbox
Warmup Inbox automatically raises your email sending reputation through our network of inboxes that talk to each other. The process of preparing an email address for general use or email outreach is commonly referred to as “Warming Up” an inbox, where you take a number of steps to ensure that an email address does not become deactivated, blacklisted, or automatically marked as spam when it begins to send outgoing messages to other recipients. This process is typically done with newly created email addresses but also benefits older email addresses who have been having issues with email deliverability, in that a noticeable portion of their outgoing mail is either landing in a spam folder or blocked entirely by an email server due to either being blacklisted or associated with a domain that has a poor reputation. Warming Up an email inbox essentially is recreating the way a typical person will use an email address.Starting Price: $19 per inbox per month -
32
SendPost
SendWorks
SendPost replaces manual workarounds, messy hacks and daily frustrations that come along with your email API/SMTP provider. See if you are sending only a few thousand emails then most email API solutions work well. You will choose one of them based on price, features or support. The real problem comes if you are one of the big senders—sending millions of emails per month. That's when managing multiple sending domains, IP-Pools and IP/Domain reputation becomes a severe headache. At that scale, even a minor dip in your email open rate or deliverability impacts your revenue. You want a solution which helps you understand what broke with your email deliverability and how you can fix it quickly. You don't want to spend hours wading through logs and manually checking if your domain or IP is blacklisted or your sending reputation is low.Starting Price: $7 per month -
33
DuoCircle
DuoCircle
Reliable and secure email hosting services for SMB and Enterprise. Safely processing over 100 million emails per month for our customers. Enhanced gateway security and filtering, inbound email security, email service backup and outbound SMTP using a new high quality infrastructure for top quality results that our customers deserve. Products include, Secure email gateway, email backup MX, email forwarding, outbound SMTP and more. DuoCircle protects against phishing attack with Link Click Protection, a part of the Advanced Threat Defense Suite. You’re covered with Link Click Protection even if site content changes between clicks. You get total protection from phishing and your confidential corporate information is secured because your employees are simply prevented from visiting sites that misuse such information. You get instant feedback in the form of an alert when a suspicious link is about to be visited. -
34
iPost
iPost
Finally, an email platform that is built for marketers by marketers. The easiest, most flexible, and dynamic marketing automation solution for your email and mobile needs. Tired of legacy platforms that are too expensive, too hard to learn, or that you’ve outgrown? You’re not alone. iPost has the tools you need. Plus the platform is easy to learn and flexible enough to adapt as you grow. The iPost email platform was built to fit the needs of today’s marketers with the scalability and features needed to grow with marketers of the future. iPost brings powerful features to email marketing with technology that is responsive, flexible, and easy to use. Real-time data to fuel audience discovery, targeting, and personalization. Intuitive reporting, from campaign, trends, to funnel and conversion tracking. Drag and drop personalization, dynamic content, and code-free design tool. Check why iPost is a recognized as a leader in The Relevancy Ring 2019 Enterprise ESP Buyers Guide. -
35
GreenArrow
GreenArrow Email
It’s time for smarter tools and more transparent data so your messages reach their destination. Plus, more insight into subscriber activity will help teams fine-tune messages, make connections, and grow business. It’s time to turbo-charge your technology. Need to send 8 million messages per hour from a single server? High-speed, high-volume, we’ve mastered it. Consider your lofty goals reachable. It’s time for a team who can actually help you. We’re not just problem-solvers at GreenArrow. We’re solution coordinators. We tackle the tough stuff, but we also hand you tools and knowledge so you get smarter about your software. GreenArrow’s premium, high-performance solutions and unmatched support team can help you grow business and build better subscriber relationships.Starting Price: $600 per month -
36
Sendcrux
Sendcrux
Our company Sendcrux specializes in email marketing, with a distinct expertise in cold email campaigns. What sets us apart is our remarkable performance, boasting industry-leading open and click rates. Our success hinges on a dedicated team, innovative strategies, and a deep understanding of audience engagement. We consistently surpass competitors, delivering unparalleled results for our clients. With a proven track record, we're the go-to choice for businesses seeking effective, high-impact email marketing solutions. Trust us to elevate your email campaigns, maximize engagement, and drive exceptional results. Choose us for a brighter, more prosperous marketing future.Starting Price: $19 per month -
37
Aritic Mail
Aritic
Deliver emails on time to the public & business mailboxes. Monitor the email-sending operations of your organization through real-time domain & IP monitoring. With our API, start sending transactional email notifications within minutes. Through robust cloud API and webhook, process inbound emails, track clicks, and handle operations effectively. Aritic Mail delivers transactional emails to your customers on time, always with high email delivery speed. Trust Aritic Mail to deliver transactional emails instantly with zero-lag in email delivery speed and inbox placement. Cloud-based Aritic Mail email server makes email delivery possible instantly, along with constant email delivery monitoring. Leverage Aritic Mail API, built for almost all programming languages, to seamlessly use with any stack. Deliver all of your organization emails through Aritic Mail and manage your email sending reputation. -
38
PostageApp
PostageApp
PostageApp is an Email Service Provider (ESP) with a no-hassle approach. We aim to get you set up within minutes for our simple email service, while not compromising on the cutting edge of deliverability best practices, such as DKIM, SPF, rigid RFC compliance and full participation in ISP Feedback Loops. We offer startup-friendly shared plans for getting your MVP off the ground, with progressive increases through to our Dedicated IP plans allowing your app to grow and you to take ownership of your reputation ensuring maximum throughput. Our developer-focused support and tools get you started without a hitch, our in-house deliverability experts actively monitor and work with you to hit inboxes and our reporting, tracking and analytics provide insight into your campaign's success. -
39
TransMail
Zoho
Guaranteed and instant delivery for your transactional emails. Your transactional emails carry crucial information. TransMail is a reliable and secure service that delivers these all-important emails instantly. With high-speed delivery and great inbox placement, TransMail means you no longer keep your customers waiting. Transactional emails are unique emails that are usually triggered by some user action. More often than not, your customers are expecting these emails in their inbox within seconds of the trigger action. Pick the right delivery service and keep your customers happy. Your users will no longer be left refreshing their inbox for their email verification code or password reset emails. Email deliverability is a consequence of the reputation of the sender IP address. TransMail is built exclusively to tackle the challenges of sending transactional emails.Starting Price: $2.50 per credit -
40
Postfix
Postfix
What is Postfix? It is Wietse Venema's mail server that started life at IBM research as an alternative to the widely-used Sendmail program. Now at Google, Wietse continues to support Postfix. Postfix runs (or has run) on AIX, BSD, HP-UX, IRIX, LINUX, MacOS X, Solaris, Tru64 UNIX, and other UNIX systems. It requires ANSI C, a POSIX.1 library, and BSD sockets. Postfix attempts to be fast, easy to administer, and secure. The outside has a definite Sendmail-ish flavor, but the inside is completely different. Multiple SMTP deliveries over the same TLS-encrypted connection. This reuses the existing tlsproxy(8) and scache(8) services. MySQL stored procedure support. Gradual degradation: in many cases a Postfix daemon will log a warning and continue providing the services that are still available, instead of immediately terminating with a fatal error. Postfix can set the execute bit on a queue file. If this does not work, then no mail will ever be delivered. -
41
ZeptoMail
Zoho
Your transactional emails carry crucial information. ZeptoMail is a reliable and secure service that delivers these all-important emails instantly. With high-speed delivery and great inbox placement, ZeptoMail means you no longer keep your customers waiting. Transactional emails are unique emails that are usually triggered by some user action. More often than not, your customers are expecting these emails in their inbox within seconds of the trigger action. Pick the right delivery service and keep your customers happy. Your users will no longer be left refreshing their inbox for their email verification code or password reset emails. Email deliverability is a consequence of the reputation of the sender IP address. ZeptoMail is built exclusively to tackle the challenges of sending transactional emails. Delivery is good. Delivering to the right folder is crucial. ZeptoMail supports industry-standard authentication mechanisms such as SPF and DKIM.Starting Price: $2 per credit -
42
AuthSMTP
AuthSMTP
AuthSMTP is the outgoing SMTP email service for your e-commerce website, mailing list or email application on most current computers and mobile devices. With instant setup, a money back guarantee and very low cost starter accounts you can test and start sending email in minutes with no risk. Our systems are custom designed / built for reliability and performance when processing and delivering very high volumes of email. We use high performance and redundant systems to help ensure we can provide the highest levels of availability. We provide an online Control Panel plus email and web based support backed by knowledgable support staff on hand to provide help if required. We have over 15 years experience providing email services and getting emails delivered quickly and accurately to your recipients.Accounts are created instantly when you sign up so with our setup guides you can start sending email within minutes.Starting Price: $36 per year -
43
Microsoft SMTP Service
Microsoft
Microsoft SMTP Service is a mail server software that enables Microsoft Windows Server operating systems to send and receive emails. It is a component of Internet Information Services (IIS) and is used to relay emails between mail servers. Microsoft SMTP Service is a popular choice for organizations that need a reliable and scalable mail server solution. It is easy to install and configure and can be used with a variety of email clients. Microsoft SMTP Service supports a number of features, including: Relaying emails between mail servers: Microsoft SMTP Service can relay emails between mail servers, which means that it can be used to send and receive emails for multiple domains. Supporting multiple email clients: Microsoft SMTP Service can be used with a variety of email clients, including Microsoft Outlook, Mozilla Thunderbird, and Apple Mail. Providing security features: Microsoft SMTP Service provides a number of security features, such as authentication and encryption -
44
EmailSuccess
DIENNEA SRL
EmailSuccess is an enterprise-level SMTP Server for high volume email sending. EmailSuccess is an MTA (Mail Transfer Agent) solution for senders of any size: ESPs and Marketing Automation Companies. High Performance EmailSuccess is an MTA designed to deliver high email volumes, giving the business full control over Speed, Latency, Reliability and Deliverability parameters. Deliverability Deliverability is key for the clients to reach their target easily. Ensure that the email has the best chance of avoiding spam filters and landing in the inbox. Advanced Sending Intelligence Optimized delivery by tuning email delivery parameters automatically and in real-time; making platform tuning ever so easy.Starting Price: $0 - $4000 -
45
Alibaba Cloud Direct Mail
Alibaba Cloud
Direct Mail is a simple and efficient service to send email notifications and batch email quickly and efficiently without the need to build your own email server. Direct Mail is a key product for serving Alibaba's own e-commerce platforms, which includes servicing Alibaba's record-breaking annual sales festival. Tens of millions of emails are sent every day through Direct Mail by Alibaba and Alibaba Cloud customers. Direct Mail guarantees stable and high conversion rates across various mail channels. Emails can be sent with the product console, API interface, and SMTP interface. Outbound mail redundancy is stored on multiple servers and databases to provide stability and scalability. Control mailing frequency with strategic mailing functionality. Includes registration confirmation, order confirmation, password reset, transaction notification, and more. Includes product promotions, journal subscriptions, and more.Starting Price: $1.99 per six months -
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MailCarry
PremierSol
MailCarry is a powerful self-hosted email marketing application that helps you send emails beyond limits. From its core features of efficient contact and list management to more advanced functionality of flexible sending, automated follow-ups and drips, MailCarry is one step ahead of its contemporary programs. Prepare your next sales engagement and email marketing campaign with MailCarry, use built-in Email Builder to design awesome templates, connect with your preferred email delivery service, schedule for the perfect time to send and see your leads graph rising on the go.Starting Price: $30/one-time -
47
Instant Bulk SMTP
Instant Bulk SMTP
We understand how important role marketing plays in business and by looking that we have designed our Instant Bulk SMTP service which help to start sending your campaign in less than 30 minutes. Manage multiple contact lists, add, remove, delete, and import-export. Not only can you check bounces, opens, and click-throughs using our email analytics. You can set up or integrate with your applications. Easy to upgrade to a higher plan without any hassle. Instant Bulk SMTP is an outgoing email service that will allow you to send emails from your email address whether you have your own software or you don’t have your own software. We understand how important the role marketing plays in business and by looking at that we have designed our Instant Bulk SMTP service which helps to start sending your campaign instantly. Unlike typical email marketing services, our high-volume SMTP hosting service lets you send from your own application server, email client or a combination of different sources.Starting Price: $50 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. -
49
HandySends
HandySends
Cloud Communication API integration platform helps you to integrate Email, SMS, and WhatsApp functionalities with a set of free software libraries. Intuitive on-brand triggered transactional email service with powerful API or SMTP servers and with a great email framework. Send a primitive, trustworthy, customized SMS with our Transactional SMS Service, perhaps the most impressive approach to reach your clients. Send messages securely, deliver notifications, customer care on the world’s most well-known messaging application WhatsApp with HandySends APIs and programming. Trim down your bounce rate to boost performance using our real-time Email validation API resulting in better delivery. -
50
AutoSend
AutoSend
AutoSend is a lightweight, cloud-based email delivery platform built to send and track transactional messages (like magic links, verification codes, and confirmations) and marketing campaigns with reliable deliverability and strong inbox placement; it provides a simple RESTful Email API with SDKs for multiple languages, SMTP relay support, and webhooks for event-driven workflows that let developers integrate email into apps quickly and reliably. It also offers tools for reusable templates, contact lists, and segmentation, campaign creation, email automations, real-time logs, deliverability analytics, and engagement tracking so teams can monitor delivery status, opens, clicks, bounces, and suppressions. AutoSend integrates intuitive dashboards that modernize both developer and marketer workflows with features such as migration support from other providers, dynamic suppression lists, personalization, and automation builders, helping organizations streamline email communication.Starting Price: $1 per month
