Anyone else seeing significant delays delivering emails to gmail due to automated bounced email handling (note: I'm using a gmail email address for the bounced email account if it matters). Google's bulk sender guidelines say to not use a different reply-to email address for each email. After turning off automated bounced email handling, emails started being delivered to Gmail users in minutes instead of several hours or days previously. I'm wondering if the fact I was using gmail as the bounced email address was throwing a monkey wrench in the mix (since they can verify the email didn't actually originate from that account). I just used gmail since it supports the + notation, however I don't think it was even working as I never once saw a bounced email in ACP, whereas as soon as I turned off automated bounced email handling I started getting bounced emails.