S-nail is an easy workaround for Linux workstation which can be quickly establish, it works with gmail, yahoo and others. The following is an example tested Ubuntu 20 or Debian 10/Buster

Configuration

This configuration is a quick sample to use TLS with STARTTLS and PLAIN. It already contains the USERNAME and PWD. This way the client does not need to authenticate anymore.

Add the following to /etc/s-nail.rc

set v15-compat 
ssl-method=auto
set smtp=<your-mailserver.com>
set user=<username>
set password=<password>
set smtp-use-starttls
set ssl-verify=ignore
set smtp-auth=plain

S-nail

Configuration

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