I can't confirm that's the reason, but I don't see why they would drip send it otherwise. Also the reply-to email is bounces+MYEMAILADDRESS@bounces.flightaware.

I can't confirm that's the reason, but I don't see why they would drip send it otherwise. Also the reply-to email is bounces+MYEMAILADDRESS@bounces.flightaware.com (@ replaced by =)