Msmtp

msmtp is an SMTP client.^[4][5] It is free software, published under the GPLv3.^[3] msmtp is packaged by major Linux distributions^[6] and by FreeBSD.^[4] It can also be found bundled in Android applications.^[7]

msmtp
Original author	Martin Lambers
Initial release	2003[1]
Stable release	1.8.30  / 1 June 2025; 4 months ago (1 June 2025)
Repository	github.com/marlam/msmtp-mirror
Written in	C
Operating system	Unix-like
Available in	9 languages[2]
List of languages English, Esperanto, French, German, Portuguese, Serbian, Swedish, Tamil, Ukrainian
Type	Mail transfer agent
License	GPLv3[3]
Website	marlam.de/msmtp/

msmtp is able to utilise email account passwords stored in Keychain on OS X,^[5] or in GNOME Keyring on computers using the GNOME desktop.^[8]

msmtp can be used in conjunction with OfflineIMAP.^[9] This allows the user to read email and draft replies offline,^[9] and to use msmtp to send the replies when back online.^[10]

See also

• Free and open-source software portal

• Sendmail