Outbox is great interface in Mail app works commonly between all mail accounts. In case you want sent mail from your iPhone/ iPad Mail app, unfortunately your mail sent from your device on request by you, not delivered successfully due to server error and it’s fail. Now failed message not available in Draft, Sent box. So it will automatically save in Outbox section of mail app as a backup. From there you can learn what to do on Outbox Mail stuck then re-sent it and save big time.
Alternate Fix: Outbox Mail stuck on iPhone/ iPad
Mostly this case is happen on sent mail with large attachment file (Zip files, Folders or Video).
#1 Close Mail app process completely through multitasking features, Re-Launch Mail app > Outbox > Retry again.
#2 Restart your iPhone/ iPad (Press Sleep/ Wake button until Slide to power off option appear on screen). Or Force Restart (Press Sleep/ Wake + Home button at once for 10 seconds).
Confirm with trash all.
#4 Remove all Mail Account, or Selected Mail account for that mail bounce problem occurred. And mail goes to Outbox.
#5 still has a problem Mail goes to Outbox and Outbox Mail stuck, Contact your Mail service provider or hosting support for the proper configuration on iOS device. (Mail Server not propagating connection for outgoing server)
Most of the case Restart Mail app or iPhone/ iPad work expectedly.
You might also like: Cannot send Mail, Connection to the outgoing server.
That’s it guys, have you any alternate solution on Outbox Mail stuck or freeze after sent from iPhone/ iPad Mail app. Also touch with us on social pages Facebook, Twitter or Google+.