Win,
I sent a message to my group 12 hours ago, it has not yet appeared on
the web site nor in my In Box.
Could it be in the group's Pending list?
How can I find out what caused the delay...
If it still hasn't arrived, check the group's activity log around the time it was sent. It might say there if it was rejected for any reason.
If it does arrive, you may be able to parse the Received header fields to find the "hop" at which the delay occurred. In a case like this it might show the hop from your email service to Groups.io's inbound server was the source of the delay. But that still doesn't tell you why.
Shal
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