libESMTP v 1.1.0

libESMTP is an SMTP client library which manages submission of electronic mail via a preconfigured Mail Transport Agent (MTA) such as Exim or Postfix. It implements many SMTP extensions including TLS for security and PIPELINING for high performance.

The current version of libESMTP is 1.1.0.

Earlier versions are not recommended.

This is the official libESMTP repository and documentation. It is maintained by Brian Stafford, the original libESMTP author.


Copyright © 2001-2021 Brian Stafford

libESMTP is licensed under the GNU Lesser General Public License. The example programs are licensed GNU General Public Licence.

Package Maintainers

Package maintainers or those who have bug-fixes or other enhancements against a legacy tarball are encouraged to fork this repository and base their changes against a suitable tag, preferably the current release, and make a pull request.

Old Websites

The old libESMTP websites at and are defunct. now belongs to a namesake.