Mail not working on iPhone after iOS 18 Update

Hi All,

UPDATE: unfortunately the fix didn't last... I can't work out what has changed except I left the LAN which also has the IMAP server on it, changing to mobile network. On return to the same network it now doesn't work again and the / doesn't help.

I dont know... back to pulling what's left of my hair out - this is SO frustrating!

Cheers!

I am having exactly the same issue. Since Tuesday I haven't received any emails. I followed some of the advice in here about deleting the email account, restarting then adding the email account. It hasn't helped at all.

I went to my nearest Apple store (Brent Cross in London) and the Apple person I spoke to said he'd never heard of the issue and sent me on my way.

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.

I am experiencing the same issue. I couldn't resolve the problem even after stopping smaip or recreating the account.

So, I have a question for everyone. This issue is only occurring with my company's mail server, and it does not happen with Gmail. Is it the same for you? Does this issue only occur with specific mail servers and iOS 18, but not with general mail services like Gmail?

I reset my phone to factory setting. Reinstalled all the apps......and it still does not work. Can Apple please give me a downgrade of the IOS? I promise I will not touch IOS 18 ever again. I promise. please.....pretty please.

Thank you for your sharing information. I am also very confused by this issue. On some devices, recreating the account resolved the problem, but on others, even after recreating the account, the issue persists. Additionally, there are devices that can connect to Gmail, while others cannot.

I have the same issue with my work email. Same error message.

also, other emails do not load properly. Keeps flashing between downloading and email updated. I have to wait a couple minutes for everything to load.

Pretty frustrating. Would like to undo the update for now if I could.

It is a very strange bug however. I have two gmail accounts: one has the ‘known’ problem (the account sends mails, but nothing is received and the mail folders are visible but empty) while the other one has no problem!

I do not see the successfully sent mails in the Sent folder. I see them going in the Outbox, they stay there 30 sec and then they are really sent but not showing anywhere. My Sent folder does not disappear: it is just empty, as all the other folders

This is not a valid answer as my point was why from two similar accounts one works fine and the other not. If I take two securefile accounts, this could also be the case. It is Apple that must solve the problem and not us having to adopt a cumbersome solution, change email account with all the problems that this entails. At the very end, changing app (passing to Outlook) is easier than changing email account. 

Surveygold wrote:

I found a solution: Spark mail …

using any third party mail app is not a solution- it’s not even a workaround. True, you get your mail, but the fact that all the third party imap clients work proves that something is wrong with the mail app itself

Today I am seeing not perfect but substantially improved iOS Mail functionality. Consequently I suspect that part of the problem might have been at the back end, along with perhaps some issues with some relevant Apple servers and/or issues pertaining to relevant network(s). Who knows. Lets pray that when they start pushing out new, automated (“AI”) email categorization it doesn’t drive us all nuts - I am NOT looking forward to that.

Just tried this with no success, exact same behavior and error for simultaneous connections in the mail app. 9/23, updated this morning, no issues before. Phone restart did not make a difference after / was applied either. 🤷‍♂️ Is this siloed to the Mail app or will this happen with other mail apps as well? I've got to get this fixed for work.

The strange Thing is that the headlines of my e-mails appears normaly on my Iwatch 9 (Not cellular & watch OS 11) connected to my Iphone, but the same Iphone on ioS 18.0 does not fetch the related mails.

I do have the same issue and I am very disappointed to got stuck on this for several hours before I realised that this is basically a bug in iOS. No workaround is available and working for me. Dear Apple Support, can you please fix this quickly asap.