Email confirmation of what?
Some listings of mine expired yesterday, and received only 12 out of 14 listing ended emails. Relisted a few last night but received all relist confirmation emails (checked and have received all relist confirmations this month). Did not perform any other actions (purchases, end listings, make a sale
🙂 that would generate a "confirmation" email.
That the ended listings emails failed for me for a couple indicates the mail servers or notification internals might have glitched (again) which seems to happen once in a while.