Mail not working on iPhone after iOS 18 Update

After the ISO 18 update on my IPad not only did my emails fail to upload or send on the iPad but I lost all mail stored on my PC which I use in tandem to print up various documents from time to time. Why would this happen.

Will we ever get a fix for this problem as you can’t seem to contact anyone at Apple who take your money🙂

Thanks! That seems to have worked.

One clarification: as you correctly stated, the dimmed / character does need to be replaced, but if the device display is in Day mode the replaced character will appear black.

I just updated to iOS 18.1.1 last night (was forced to, as iOS 17 kept interrupting me and insisting I update several days in a row. I finally did so out of frustration). Now my Mail App has stopped working (used only to access my Hotmail). Will not allow access using 2FA, or by entering my password. I tried following the various steps suggested, even to deleting my account and re-adding, changing network, Airplane Mode, etc. Now I have a dead app with none of my historical emails. I can access my Hotmail on my iPhone using the Outlook App, but not with the Mail App (which is needed as that is the default security route for 2FA for other apps that auto-open it).

I cannot receive emails via my Mail App, nor can I send them. It says my password is incorrect, though the password works just fine on my PC, and on my Outlook App on the same iPhone.

I see this issue has been around since at least September based on prior posts. Have they not been able to find the bug and squash it in three months, with several bug updates in the interim? Especially since the Mail App is an Apple product, you would think they can get their iOS and App to play nice.

@sjcorpst - I have that issue from time to time also! Then, later that day or the next day the body of the messages are there! But, I cannot respond to a message or create a new message and send it from that email account.

I can’t add any more email address to my iPhone it’s gone, there is icon to email accounts. WTF is wrong with Apple? This is unexpected and it’s insane as I have 3 addresses and now I can’t add them and have you use my laptop to access my other accounts. Fix this Apple..asap. How could this get by everyone on the last update? Where is the mail icon under general in setting????!

This thread now has *27* pages of responses from people who, like me, are experiencing the same issues. And yet Apple *still* hasn’t acknowledged this is a major issue with their Mail App for most people and *still* hasn’t fixed it with the latest IOS update. Apple seems fixated on “Apple Intelligence” but it apparently doesn’t have the intelligence to recognize feedback from its customers.

Suddenly, Outlook for Mac is working like a champ. I haven't done anything new, only the same things everybody else has done. I'm still not having consistent luck on my iPhone or iPad using both Apple Mail and Outlook.

I'm wondering if this has to do with the age/version of the device. I have an iPhone XS and my wife has an 11Pro and we have no problem with the Apple Mail app since iOS 18.1. Maybe it is just the newer devices that are having this issue? I'm also not having a problem with my 3 or 4 year old iPad Air.

Note: I just updated to 18.2 and Apple has added some 'features' to the Mail app, none of which I want or need, but others may like them. I turned them all off.

I have an iPhone 16 Pro and iOS 18 (18.1.1 to be exact) and was having the problem of my Mail not syncing between devices. This suggested fix took care of that issue. I’m not on a business server; I’m a standard client on Comcast.

What I find is that mail in iOS 18 is extremely slow to sync with the server. I can pull up outlook at the same time mail is struggling to connect and see messages that ultimately appear in mail way faster with outlook. I am on iOS 18.2. Can Apple finally take this issue seriously and address the performance problem in their mail application?

ABSOLUTELY ridiculous. I have 3 email accounts I use for various activities. My Icloud on my iPhone is hardly getting any emails, and my 2 YAHOO accounts are getting nothing!! I have to go to my MAC to see them Doesn't Apple know that people are running business off their iPhones?? DUH -- when will this be fixed???????

My mail in the latest update doesn't show me notifications in the mail box. If and when it does it's incorrect. Only showing 1 when in fact I have like 50+ in my mail box using the mail application. Anyone else have this issue or a workaround? Crazy. If it isn't broken... Don't FIX IT!

When is Apple going to fix mail in ios18 it’s very frustrating. Had to wait until I can go on my computer to get mail. Even the mail app on my computer says no content in the message but it’s there on my iPhone

Yes, we know the mail is not working for thousand of people. I have no answer for that.

Your "view every account" issue is unrelated to this discussion, however I thought I'd post this as I think this will answer what I think the problem is you (and probably others) are having with the new iOS mail app (default) interface.

https://osxdaily.com/2024/12/16/disable-mail-categories-inbox-iphone/

I hadn’t really noticed any mail problems until I tried to search for old mail. Then I started getting some error about it not finding all the messages until the phone is on a charger and on wi-fi. Wth?! This is ridiculous and doesn’t make any sense.