Issues with Email "Undo Send" feature.
I have an iPhone 8 SE. After the IOS 16 update that included the new "Undo Send" feature, I found that if I sent an email and immediately closed out the window, some sent emails would just dissappear into a black hole. Not received by recipient, not in Sent or Draft folders, or any other folder. Just GONE and unrecoverable! I discovered by waiting 10 seconds before closing out the Mail window, the message was sent and saved in Sent folder. Turning OFF the "Undo Send" feature in Settings Mail, fixed the problem. Anyone else have that problem?
iPhone SE