SMTP Zen is high-deliverability SMTP and professional email with unlimited domains, guided SPF/DKIM/DMARC, and real-time logs.
Cost / License
- Paid
- Proprietary
Platforms
- Online

SMTP Zen is high-deliverability SMTP and professional email with unlimited domains, guided SPF/DKIM/DMARC, and real-time logs.

SMTP2GO is an email service provider, performing the task of reliably delivering transactional and marketing emails, and providing reporting tools to track and visualize what is happening with outgoing emails.
Turnkey Solutions for the Enterprise Cloud
Installation, Configuration, and Management tools for enterprise email, collaboration, messaging, video conferencing, file sharing, and file transfers.

Origami SMTP was created with the idea to have a fake email server for testing purposes that supported TLS. This is because the code the developer was working on at the time had several hard coded values enforcing TLS so most other solutions would not work.


SMTP Diag Tool is used to identify and troubleshoot SMTP server problems by trying to send a message to an SMTP server while displaying all diagnostic information in realtime in a log window.


James stands for Java Apache Mail Enterprise Server! It has a modular architecture based on a rich set of modern and efficient components which provides at the end complete, stable, secure and extendable Mail Servers running on the JVM.
Configure SMTP e-mail in IIS when you want to deliver e-mail messages from your site. Mail can be delivered immediately or it can be delivered to a file location on disk where it can be retrieved for delivery later.




Email gateway application (SMTP server) that makes it easy for senders to adopt the latest authentication specifications ( SPF and DKIM) to comply with changing ISP policies for accountable outbound email delivery. No over hype. It just delivers.




testmail.app is an email testing platform for developers and QA teams. Create unlimited test email addresses on the fly using namespaces and tags, with no inbox setup required. Tags make it easy to isolate emails between users and parallel test runs.




Sophisticated mature messaging server (IMAP, POP, MAPI mail, IM, SIP etc.) Not pretty but full featured and reliable. Community licence allows free personal/family use (< 5 users).
LunaticSMTP is a dummy SMTP server with desktop GUI for testing email sending applications.



All-in-one email marketing india platform DBEM - Designer Bulk Email Marketing includes maximum ROI - Return On Investment, Inbox Delivery and everything you need to Create, Send, Track, Manage and Profit from email marketing - but it doesn't stop...

Dokyr is an open-source deployment control plane for a single Docker host. It gives one VPS the operational conveniences people expect from a platform as a service: projects, releases, domains, automatic HTTPS, databases, a private registry, object storage connections, backups...




Halon is a global leader in email infrastructure, empowering large senders and mailbox providers to maximize email. Founded in 2010, Halon's solutions process billions of emails daily worldwide.



Coresender is an email delivery service for transactional and marketing emails that can replace an in-house infrastructure.




Reliable Email API and Cloud-based SMTP service. Get the highest deliverability and detailed analytics of the e-mail messages sent from your system or application.




Hotsol is an email marketing company that specializes in high volume email delivery. We work with many small, medium and large companies to send large amounts of email on a daily basis. Whether its transactional or promotional email, our network architecture is specifically...
outMail providing a secure and trusted email relay (also known as SMTP Smart Host or mail proxy)

LeaderSend takes care of delivering your transactional messages and managing infrastructure, while you can focus on your business instead.
The Email Service For Developers. With SMTPeter you don't have to worry about complex things like DKIM signing, SPF, DNS hosting, DMARC or tracking clicks and opens. You can easily send your messages to SMTPeter using REST or SMTP.




Send millions of transactional or commercial emails using your own bulk smtp server with 24/7 support at affordable price.
Mailsnag lets you build resilient SMTP integrations while protecting you from spamming customers during testing on QA and Staging environments. It is like Chaos Monkey for SMTP integrations.




A lightweight SMTP server written in Go, made for receiving large volumes of mail. To be used as a package in your Go project, or as a stand-alone daemon by running the "guerrillad" binary.
Codermails is online email maketing provider. It is founded in 2017. It own best in class email marketing software for bulk email marketing service.