Email not sending on iPhone

I’m having the same issue. Some emails go through without a problem, others just disappear like I never sent them. My customers are getting angry. It looks like I’m not getting back to them. Hopefully this gets fixed fast!!

It's not about being able to send emails or not, it's about emails that have been sent but once you leave the app and return to the app the email does not exist anymore, it is not in the sent folder, and the recipients have not received it. It is as if the email was never tight, sent or existed .

Every time I speak to Apple Support about this, it comes as a totally new issue for them as if they've never heard of it before, yet there are so many people complaining about the same thing.

Support for this issue does not exist and Apple/iOS is getting worse by the day

I'm afraid that is a different issue to the one where the email has been sent but completely disappears with no evidence of ever having been written or sent.

Your issue sounds like an outgoing server issue, or connection issue.

I was hoping the restart helps but it didn’t.

Nobody got the « Sender address was invalid » ? Of course I’ve checked several times my login details, both IMAP and SMTP ones… But I can send emails if I disable iCloud Mail. It’s really getting on my nerves!

Same problem with mail just completely disappearing. Every indication is that it’s been sent but when you don’t have the expected reply, one way or another you discover that the email has simply vanished! Not in drafts or sent or outbox, just **** gone. This is a major issue!

I have a slightly different problem after installing IOS 16.1.2. Earlier this week two emails simply did not go out after clicking the send. I could not find those emails in the draft or any other folder. This morning same thing happened. I retyped multiple time the same reply and same issue. The mail did not go to the outbox or sent folder. I also did not hear the swoosh. After rebooting the mail program works as intended (until the next time). There is something wrong with IOS 16.1.2

The Mail app on iOS 16 is a royal mess. Random emails get stuck in Outbox with no intimation whatsoever which at times causes embarrassing situations. Many have reported this in my organization. It was all good on iOS 15.7.

If you just swipe to close the mail app, and don’t force-close the mail app, the message will be sent after the timeout you have set. As I said, Apple does not expect users to force close any app. There is no benefit to force closing, and contrary to expectations it actually slows down the phone and uses more energy from the battery when you next launch the app you have closed.

Apple added this feature to be competitive; other email providers, such as Gmail, have had it for a couple of years.

I was replying to a post that said that locking the screen prevented mail from sending. So I tested that extensively, and found that locking the screen DOES NOT prevent mail from sending.

I would think that was useful information, but you don’t have to use that information if you don’t want to.

Yes, switching off a very useful feature does solve the problem, but is only required if you insist on force quitting mail. If you don’t force quit mail you will have no sending problem.

It’s always bothered me that outgoing settings are labeled “optional”. They aren’t, except in the very rare instance of the email address domain being the same as the network domain. e.g., your address is me@example.com and your mail network provider is example.com. For all practical purposes this is never true in the modern world.

I now have 16.2 with “Outgoing server issues on both my iphone 11 and my ipad air “ I am being advised to check my SMTP which I cannot find of course.The other advice from Apple Support is to delete my Mail Account

Same issue here. I installed ios16 yesterday and have had two email messages disappear without a trace after sending them in the past 24 hours. Did they send??

I had to reset both my iPhone and iPad for this to work… Glad you’d needed just a simple restart ^^

Then I suggest you read the 9 page thread that you posted to, which explains many times what causes this and how to fix it.