msmtp & mutt

http://msmtp.sourceforge.net/doc/mutt+msmtp.txt

This file describes how to use msmtp 1.4.0 or newer with Mutt.


1. Install msmtp:

$ ./configure
$ make
$ make install


2. Configure msmtp:

Create the file .msmtprc in your home directory, with no more permissions
than user read/write (0600, -rw-------).
Create a default SMTP account by putting the following commands in it:

account default
host smtp.yourprovider.example
from you@yourprovider.example

This is sufficient, but you may want to use SMTP authentication (instead of
POP-before-SMTP for example). Simply add

auth on
user JoeExample
password Secret

to the same file.
Using TLS encryption is always a good idea, so add the line

tls on

If you are not sure whether the SMTP server supports authentication and/or
TLS encryption, find it out with

msmtp --host=smtp.yourprovider.example --serverinfo


3. Tell Mutt to call msmtp instead of /usr/sbin/sendmail:

Add the following lines to your Mutt configuration file:

set sendmail="/usr/local/bin/msmtp"
set from=you@example.com


4. If you want to know how to set up multiple accounts, advanced TLS options,
DSN, and other more or less useful stuff, read the msmtp manual. There's a
"Using msmtp with Mutt" paragraph in the Examples section.