It looks like there might be a delay of 1.5+ hours for Civi marking Amazon donations as receiving TY emails?
cid=37475083 donated AMAZON P01-1857812-9469701-C065419 Invoice Reference 72407113-1, which was received at December 3rd, 2019 12:29, but is marked Thank-you Sent December 3rd, 2019 2:13 AM. If you search for all Amazon donations today, there are many hundreds showing as not yet receiving the TY emails.
Is this just a delay in Civi marking the TY emails as being sent, or are we really taking 1.5 hours to notify these donors?