The mail-mta category contains mail transport agent packages.
| courier | An MTA designed specifically for maildirs |
|---|---|
| esmtp | User configurable relay-only Mail Transfer Agent with a sendmail-like syntax |
| exim | A highly configurable, drop-in replacement for sendmail |
| msmtp | An SMTP client and SMTP plugin for mail user agents such as Mutt |
| netqmail | qmail -- a secure, reliable, efficient, simple message transfer agent |
| nullmailer | Simple relay-only local mail transport agent |
| opensmtpd | Lightweight but featured SMTP daemon from OpenBSD |
| postfix | A fast and secure drop-in replacement for sendmail |
| protonmail-bridge-bin | Serves ProtonMail to IMAP/SMTP clients |
| qpsmtpd | qpsmtpd is a flexible smtpd daemon written in Perl |
| sendmail | Widely-used Mail Transport Agent (MTA) |
| ssmtp | Extremely simple MTA to get mail off the system to a Mailhub |