Configuring applications to use extsmail is typically easy. This page aims to make the process even easier by recording how to configure different applications to use extsmail. Contributions of configuration options for programs not listed on this page are always welcome.
Set the sendmail environment variable before executing mail / mailx e.g.:
$ sendmail=/usr/local/bin/extsmail mail ... $
On Debian this can be set with:
$ cat ~/.mailrc set sendmail=/usr/bin/extsmail
The sendmail option in your muttrc needs to be updated to e.g.:
set sendmail="/usr/local/bin/extsmail -oem -oi"
The sendmail-path option in your pinerc needs to be updated to e.g.:
sendmail-path=/usr/local/bin/extsmail -oem -oi