Fix Outline email sending

[Aketzu]

error:1408F10B:SSL routines:ssl3_get_record:wrong version number
probably because SSL is used by default and pahaip doesn't support it

https://github.com/con2/outline/blob/bc0f944764d60fcec3fd7a6ac03f8a35d0e16fd6/server/emails/mailer.tsx#L108