Add E-Mail Authentification to Media Type E-Mail (SMTP-Server Name, SMTP E-Mail Address and additionally Username, Password, optionally TCP Port and SSL)

Please can you add E-Mail Authentification to Media Type E-Mail.
When there shoud be sent a trigger-e-mail notification I want to use a external SMTP-Server (for example mail.gmx.net).
Therefore I need SMTP Authentification to use this external SMTP Server.