Earlier quoted context omitted.
Unfortunately Postmark was recently acquired by a so-called “campaign management” company and they have already started sending unsolicited commercial mail to unauthorised recipients, and when I pushed back and complained they became downright hostile and confrontational and told us to unsubscribe - from a marketing list that we hadn’t opted into, and that was operated via their new parent company. It was like a conv…
Holy crap! I had no idea. Do you mean they sent unsolicited commercial mail to registered users of Postmark, or do you mean they sent to email addresses they collected as part of their operations (emails that users of Postmark sent emails to)?
It was neither an emergency nor a transactional message, making it exactly the kind of behaviour they don’t permit from their own customers. Doubling down with the instruction to unsubscribe oneself could only be interpreted as a “fuck you”, and coming from an email company claiming such a moral high ground as Postmark formerly occupied, a sensational own goal.