The abstraction is at the SMTP level at the moment, so it'll work with Mailgun, but not through their APIs just yet. It knows no specifics of any mail provider

The abstraction is at the SMTP level at the moment, so it'll work with Mailgun, but not through their APIs just yet. It knows no specifics of any mail provider, but works with any which support SMTP. I should make that a bit clearer, thanks!