Since some months I use Postmark as a SMTP server. This works but I don’t get access to the correct stream. For sending mails with phplist I want to use the broadcast stream instead of the transactional . stream. Now phplist mails all go to the postmark transactional stream. For using the right stream need to add
Header: X-PM-Message-Stream: broadcast . Is there a way I can send this info to Postmark?
Kind regards, Berend Raap