Browse mail-mta
courier
An MTA designed specifically for maildirsdma
esmtp
esmtp is a user configurable relay-only Mail Transfer Agent (MTA) with a sendmail compatible syntaxexim
A highly configurable, drop-in replacement for sendmailfakesmtp-bin
hydroxide
mailhog-bin
mailpit
msmtp
An SMTP client and SMTP plugin for mail user agents such as Muttnetqmail
qmail -- a secure, reliable, efficient, simple message transfer agentnotqmail
nullmailer
Simple relay-only local mail transport agentopensmtpd
postfix
A fast and secure drop-in replacement for sendmail.proton-mail-bridge
qpsmtpd
qpsmtpd is a flexible smtpd daemon written in Perlsendgmail
sendmail
Widely-used Mail Transport Agent (MTA)sendr4d4
ssmtp
Extremely simple MTA to get mail off the system to a Mailhub