esmtp
esmtp is a user configurable relay-only Mail Transfer Agent (MTA) with a sendmail compatible syntax. It's based on libESMTP supporting the AUTH (including the CRAM-MD5 and NTLM SASL mechanisms) and the StartTLS SMTP extensions.
sSMTP
SSMTP is a program which delivers email from a local computer to a configured mailhost (mailhub). It is not a mail server (lik ...
NikaMail
Portable, extendable, zero-config email server for JVM and Ruby.
- Portable Just copy and run. Only dependency is Java. Need to ...
sendEmail
sendEmail is a lightweight, command line SMTP email client. If you have the need to send email from a command line, this free ...
Sendmail
Sendmail is a general purpose internetwork email routing facility that supports many kinds of transfer and delivery methods, i ...
msmtp
In the default mode, it transmits a mail to an SMTP server (for example at a free mail provider) which takes care of further d ...
Postfix
Postfix is a mail transfer agent (MTA) that routes and delivers electronic mail. It attempts to be fast, easy to administer, a ...