Mail not working on iPhone after iOS 18 Update

I received the answer from my email provider, that the IMAP issue is caused by a bug in iOS 18 and iPadOS 18.

They suggested to report my problem to Apple.😅

So, Apple please would you fix this problem?

Everybody is trying a combination of things that everybody else has already tried but not had any luck doing. I believe the only way Apple is going to pay attention is if everybody calls in or contacts Support. Unfortunately, Support will just walk you through deleting and reinstalling. They’re starting to get as bad as Microsoft. Reinstall and reboot.

mikefromfort wayne - FYI you have repeated what some others have already posted here as a “fix” and which has already been tried by MANY others - myself included - to no avail, at least not as a permanent fix. In many instances the actual source of the problem appears to be much more complicated, not correctable at the consumer’s end, and it turns out that the problems with Mail in OS 18 are not the only problems that people are encountering within this OS version.

I think we all can agree that Apple IMAP has an issue that Apple is not resolving or even acknowledging at this time. I suggest that all of us, exam and everyone of us, submit a ticket instead of just replying to all of us that yours isn't working either. That doesn't move us towards a solution. Just my $0.02 worth

While I agree that grumbling in this thread is not productive, your opinion that "Most people are not having a problem with Mail so it is either unrelated to the upgrade or the result of an uncommon confluence of circumstances" is uninformed and even less helpful.

It is the rare bug that impacts "most people", and that is hardly the measure of whether a bug needs to be addressed. If a serious bug affected you, I doubt you would be so charitable. There is certainly a bug in the upgrade that suddenly broke email from, among others, dovecot servers. Some of us have been able to get by with workarounds, but the situation is, indeed, unsatisfactory.

Lucky you that the bug has not impacted you, but it has caused a lot of trouble for a whole lot of people.

apple ios18 has broken my ability to use Mail and seriously slowed down doing anything via Safari. Apple, are listening? We need you to fix this now.

anc77 wrote:

Does the new IOS 18.01 update fix the email issues?

It did not fix mine on my iPhone. No.

After updating to IOS 18.1, my mail account is still not working. Note: all inputs are identical to those on my iPhone running 17.7 where the mail account is working.

You are not the only one. At first, it seemed to work after updating to 18.1 but when I tried to fetch new emails again, it started to not work properly. How long should we wait?

After iOS update 18.1 I am unable to use IOS email for IONOS account. All works fine in my outlook. But not in my iOS email. What to do.? Tried what was in feed. Does not work

the problem is not solved after updating to 18.2.1.

I have confirmed that my iphone with ios18 connects to the IMAP server (because it successfully fetches list of folders) with TLSv1.2, but still is unable to show any email messages.

I tried removing, rebooting and reconfiguring email account multiple times, without success.

OK, also here, IMAP stopped working on my Iphone after upgrade to IOS 18.

Ipad remained working on IOS 17.

Installing another mail client on the Iphone fixed the issue, clearly Apple changed something in their Mail app.

Had contact with customer support a few times, but what strikes me is that they are not aware of anything that changed!

I also used self signed certificate for years. After playing around for a while I decided to replace them with Let's Encrypt certificated.

Then it instantly started to work again and the error messages on the server side were gone, indicating the client had difficulties with the self-signed certificate.

So Apple, please fix the self-signed certificate support again and, AT LEAST, inform the public and your helpdesk people that something has changed so people like use are/can be informed.

Lacking information and transparency here is killing!

I am not happy at all! I have purchased every iPhone since its birth. I have an IPad Pro and a a MacBook Pro. This issue with IOS 18 turned my work imap email on my iPhone and iPad in to bricks. I tried all of the proposed fixes in this thread! Come on Apple this is the best you can do in new software deployment? You should be ashamed! I am waiting for the fix! My imap email on both can send emails and I get green check marks on all systems go but can get my inbound emails! Really unhappy and frustrated

S0m3Th1nG_AwFul wrote:

iOS 18.1 release didn't fix the issue.

I suspect it somehow related to having non-ASCII (non-Latin overall) symbols in folders' names as it was mentioned by someone earlier, but not 100% sure.

Nope. Has nothing to do with non-Latin chars.

it’s not fixed. I had an iPad on 18.1 that I migrated to a new iPad. All my mail showed up on the new iPad but no new mail has been fetched since. The bug has to do with a faulty fetch new mail from imap process.