msmtp is a very simple SMTP Client, usable as sendmail and ssmtp alternative. msmtp is faily sendmail compatible.


msmtp is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

More information can be found here:


Create and join a new directory, download version 1.8.12 (how is able to compile on U7 with GnuTLS 3.3.29) and unpack files:

[isabell@stardust ~]$ mkdir ~/msmtp; cd ~/msmtp
[isabell@stardust msmtp]$ wget
[isabell@stardust msmtp]$ tar -xvf msmtp-1.8.12.tar.xz --strip-components=1
[isabell@stardust msmtp]$

Compile msmtp, install it and cleanup your home directory:

[isabell@stardust msmtp]$ ./configure --prefix=$HOME --without-msmtpd
Install prefix ......... : /home/isabell
NLS support ............ : yes
TLS support ............ : yes (Library: GnuTLS)
IDN support ............ : no
GNU SASL support ....... : no (most likely unnecessary)
Libsecret support (GNOME): no
MacOS X Keychain support : no
Build msmtpd ............: no
[isabell@stardust msmtp]$ make; make install
[isabell@stardust msmtp]$ cd ~; rm msmtp -rf
[isabell@stardust ~]$



Your E-Mail-Account configuration needs to be stored in ~/.msmtprc

If your provider Supports RFC 6186 (Use of SRV Records for Locating Email Submission/Access Services) you can easyly create a configuration. (Uberspace actually does not provide Support for RFC 6186)

[isabell@stardust ~]$ msmtp
[isabell@stardust ~]$

If your provider does not Supports the RFC you can get a sample configuration from

[isabell@stardust ~]$ wget -O .msmtprc
[isabell@stardust ~]$ chmod 0600 ~/.msmtprc
[isabell@stardust ~]$

Open the configuration with the editor of your choice.

Example Configuration


dont connect to ‘localhost’ otherwise the certificate validation will fail.

# Example for a user configuration file ~/.msmtprc

# This example focusses on TLS and authentication. Features not used here
# include logging, timeouts, SOCKS proxies, TLS parameters, Delivery Status
# Notification (DSN) settings, and more.

# Set default values: use the mail submission port 587, and always use TLS.
# On this port, TLS is activated via STARTTLS.
port 587
tls on
tls_starttls on

# Define a mail account at a mail service
account uberspace

# Host name of the SMTP server

# Envelope-from address

# Authentication
# The following user / password methods are supported:
# see for more informations
auth on

# Password method 1: Add the password to the system keyring, and let msmtp get
# it automatically. To set the keyring password using libsecret:
# $ secret-tool store --label=msmtp \
#   host smtp.freemail.example \
#   service smtp \
#   user joe.smith

# Password method 2: Store the password in an encrypted file, and tell msmtp
# which command to use to decrypt it. This is usually used with GnuPG, as in
# this example. Usually gpg-agent will ask once for the decryption password.
#passwordeval gpg2 --no-tty -q -d ~/.msmtp-password.gpg

# You can also store the password directly in this file or have msmtp ask you
# for it each time you send a mail, but one of the above methods is preferred.
password <IsabellsTopSecretPassword>

# Set a default account
account default : uberspace

Test your configuarion

[isabell@stardust ~]$ echo "Lorem ipsum dolor sit amet, consectetur adipisici elit" | msmtp
[isabell@stardust ~]$

Tested with msmtp 1.8.12, Uberspace 7.15

Written by: CptSanifair <>