How does this happen
Why are marketing emails even being sent out through a system that allows this? I'd have expected some kind of mailer application, that you just submit your content to and it does the heavy lifting of sending it out for you to the right people in the right way.
I can't believe you have a marketing department designing the mails, then manually copying and pasting them into something like outlook to send out, so it's possibly some mailing list setup that was configured incorrectly, but it's still hard to see how it's not all automated in a big organisation.
Biting the hand that feeds IT
