Lua primitives: sendmail_path()
The compose(), reply(), and send_mail() primitives each send outgoing mail by invoking a copy of sendmail.
This primitive lets you specify the path to use, along with any required arguments.
-- -- Set the path to the binary that will actually deliver -- outgoing email. -- sendmail_path( "/usr/lib/sendmail -t" );
This function has been available since version 0.07.