OK, it's an important event. But why / how did I receive 10 apparently identical COVID-19 vaccination reminders from NHS Booking this morning? Same content & date / time sent. Gmail account viewed in Apple Mail on iMac. BTW, I'm happy to receive a reminder, just curious about the repeats.
Digging into the headers, there are a few differences in obscure (to me) strings.
eg one has:
X-Received: by 2002:a17:906:cf82:: with SMTP id um2mr2809900ejb.322.1619768421160; Fri, 30 Apr 2021 00:40:21 -0700 (PDT)
Return-Path: <0102017921b8a8fe-08492fb0-1dc8-4910-9852-48c1cb28e633-000000@mail.notifications.service.gov.uk>
...
Received: from e239-68.smtp-out.eu-west-1.amazonses.com (e239-68.smtp-out.eu-west-1.amazonses.com. [23.251.239.68]) by mx.google.com with ESMTPS id h4si1069611ede.481.2021.04.30.00.40.20 for <my email address> (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-SHA bits=128/128); Fri, 30 Apr 2021 00:40:21 -0700 (PDT)
while another has:
X-Received: by 2002:a17:906:4098:: with SMTP id u24mr2752964ejj.228.1619768421160; Fri, 30 Apr 2021 00:40:21 -0700 (PDT)
Return-Path: <0102017921b8a8ff-26260a58-6993-45dd-9c0d-bedabc9f553c-000000@mail.notifications.service.gov.uk>
...
Received: from e239-82.smtp-out.eu-west-1.amazonses.com (e239-82.smtp-out.eu-west-1.amazonses.com. [23.251.239.82]) by mx.google.com with ESMTPS id b6si2941661ejb.254.2021.04.30.00.40.20 for <my email address> (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-SHA bits=128/128); Fri, 30 Apr 2021 00:40:21 -0700 (PDT)
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Is there some kind of internal bouncing going on somewhere? What would cause 10 copies of the same message?