A transactional message is something like "Thank you for signing up" or "Your password was changed" once per transaction. Hence, transactional.

Regardless how much they and you want to spin it, this is a 14 day marketing campaign. A single transaction (ie. subscribing) should not result in 14 emails sent. And certainly not one a day. By that logic I can send you unlimited emails because you bought one thing from me once and somehow consider all of them "transactional".