We noticed that sometimes when prospects reply to Marketo emails, the subject line gets appended with [MARKETING]. For example:
Original subject: Imagine editing Office files, without Office
Replied to subject: RE: [MARKETING] Imagine editing Office files, without Office
Also, when you look in the email they actually replied to, it looks like the subject line they received was: [MARKETING] Imagine editing Office files, without Office
This makes it look like a large spam-type blast and not a personalized email. Has anyone seen this before? If yes, what's causing this and is there a way to fix it?
Thanks!
Liz