Ah, okay. Yes we support custom DKIM for all accounts. We do not allow newsletter (or any bulk style) sending - I explained our reasoning behind separating and

Ah, okay. Yes we support custom DKIM for all accounts. We do not allow newsletter (or any bulk style) sending - I explained our reasoning behind separating and only sending transactional email through Postmark - by definition of transactional, the recipient is expecting the email and it is a custom response to an action. Edit: typo.