Emails disappear without sending using default app

Both my wife and are having exactly the same problem on our iPads; create an email, click Send, hear the swoosh sound, email disappears from our iPads and is not received by the intended recipient. This does not happen to all emails and may not happen for days at a time but in a recent example, my wife created / sent four emails in the spaces of 10 / 15 minutes - three disappeared but one was successfully delivered. The missing emails are not in any folder. It is not receiver dependent as we’ve successfully sent emails to the same person/ address before and after the disappeared emails.

We get the feeling that the “send process” for the disappearing emails takes a little longer than we would expect but do not have firm evidence.

Hey there YorkieMax,

Thanks for reaching out to the Apple Support Communities.

To get started, we do want to make you aware that emails that are sent only remain in the Outbox folder temporarily until they have been sent. After the email is sent, you should be able to then find them in the Sent folder. So just too confirm, if you check the Sent folder for the emails that have went missing, are you able to see them there?

If not, we would recommend going through any step you may not have already tried from the following resource: If you can’t send email on your iPhone or iPad - Apple Support

Before you begin

There are a few things to keep in mind and check:

- When you make an iOS or iPadOS backup in iCloud or iTunes, it backs up your mail settings, but not your email. If you delete or change your email account settings, previously downloaded email might be removed from your device.

- Make sure that your device is connected to the internet.

- Check with your email service provider to find out if there's a service outage.

- Look for the Undo Send button in your Inbox or list of mailboxes. If Undo Send is available, the message has not been sent.

- Learn what to do if you can't access your iCloud Mail, or you can't send and receive messages with your @icloud.com email address.

Check the Outbox for unsent email

If you get a message that says your email wasn’t sent, then that email goes to your Outbox. Check your Outbox and try to send the email again with these steps:

1. In Mail, go to your list of mailboxes.

2. Tap Outbox. If you don’t see an Outbox, then your email was sent.

3. Tap an email in the Outbox. Make sure that the recipient’s email address is correct.

4. Tap Send.  

If still running into issues after going through the steps above, then based on the information you've provided and the steps you've already tried, we'd recommend reaching out to Apple Support directly from this link here: Contact - Official Apple Support

Take care!

Hi YorkieMax,

Thanks for following up. We want to continue working toward a resolution by having you reach out for support here:  Contact - Official Apple Support

Thanks.

Hi YorkieMax,

Please keep us updated when you get a chance to get that screen recording so that we can assist further.

Cheers!