Honestly, I'm not entirely sure as I'm not at all technically inclined. I just did as asked, which was to c/p the 'show original' in the delayed notif and send it to them. I also included the original site link to the notif in question so they could see that there was indeed a delay of 2+ hours from when I got the DW notif on site/when it was posted to when the email came through on my end. There may be more info to cross, I don't know, but I'll just have to wait to hear back from the person helping on that site. I don't actually know if maybe this is greylisting for DW on AmazonSES's end, but this definitely all started on/around the most recent code push and it has gotten steadily worse since then, with it starting with small windows of notif delays to now where we have notif delays consistently for the last 2-3 days.

Other than what I'm doing, which is relaying info, I don't know what else to do. If anyone has any suggestions, I think we'd be happy to hear them.