Postfix Alternatives [Page 2]

qmail is the name of an advanced level of mail transfer agent for the UNIX based operating systems.

msmtp is an SMTP client.

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

Dovecot is an open source IMAP and POP3 email server for Linux/UNIX-like systems, written with...

Open Source

Scriptable and scalable SMTP server and email framework designed for service providers.

Protect mail server against spam, viruses and malware with Proxmox Mail Gateway security for businesses, government, education and non-profit organizations.

MailHog is an email testing tool inspired by MailCatcher, but easier to install.

Open Source

MailEnable is a Windows based mail server and email server program that is packed with the state of the features and functions like antivirus and spam filtering system, webmail management system, cardDAV, CalDAV and much more.

Full featured email server built in docker with free plan.

KumoMTA is the world's first Open-Source MTA designed from the ground-up for large-volume senders. Get a fast, flexible, supported solution.

Open Source free

Mailu is a simple yet full-featured mail server as a set of Docker images.

Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface.

sendEmail is a lightweight, command line SMTP email client.

Open Source

The Mercury Mail Transport System is a mail server that sends and receives messages on behalf of a...