Mail not working after updating my iPhone 14 Pro to iOS 18

I followed an earlier comment and turned off my wifi and just used cellular and voila the Mail app started get emails sent from another device within a couple of minutes.

Checked my wifi settings (tap the i of the network you are connected too ) and i turned off private wifi address and limit wifi tracking. voila emails now downloading over wifi.

hope that may help someone

Ok so after investigating this email not downloading problem which for me started when upgrading to iOS 18.2, I've just discovered something after trying lots of different network setting changes and other things like reinstalling the Gmail account on my phone etc. After resetting the iPhones network settings I had to as you'd expect reconnect to my WiFi (a Sky Hub). Before I did this however I went into the Mail app using the 4G/5G data network and my emails immediately downloaded. 

Once I reconnected to my WiFi again it stopped working. So remembering something a while back with Apple devices and some of their privacy/security feature updates conflicting with Skys ‘Broadband Shield’ feature, i've logged on to 'my Sky' and disabled Sky Broadband Shield and low and behold my Gmail now downloads to the Mail app whilst using my Sky Hub WiFi.

if you are experiencing similar problems and you’re in the UK and have Sky Broadband try turning off Sky Broadband Shield. Or if you use a different Broadband supplier and they have an equivalent feature that blocks certain sites for kids etc. disable the feature and see if that helps.

First, do you have a 3rd party VPN installed, even if you are not using it? If so, delete the VPN profile in Settings/General/VPN & Device Management/VPN. Don't just turn it off; delete the profile. Many VPNs don’t play well with Private Relay. And if you have Private Relay you don’t need VPN; it can cause a lot of problems.

If you don’t have VPN installed, go to Settings/[your name]/iCloud/Private Relay/IP Address Location and change it to Maintain General Location

Also, depending on where your email account is hosted your ISP may not accept encrypted DNS connections. All of the major ISPs do, however.

I had the same problem but I discovered a fix that worked for me. When you open the mail app, select your email account. Once open, at the top you should see the word Primary highlighted, touch that and it should go away and now say allow all emails. Good luck!

I had this issue of emails not reliably downloading in the Apple email app. I tried many things based on the suggestions in this thread to no avail. Then someone mentioned the private relay, so I tried turning that off and emails downloaded immediately.

The question is why do I have to turn private relay to get email app to work properly and why this wasn’t necessary until recently??

I have fixed my Mail issue.

Issue was: Using an Apple .me email before 18.2 update I would see the message had arrived on my locked home screen and would receive a ding. After 18.2 no notification at all on Home Screen but if I open the phone I could see a new badge.

Fix (for me): Settings|Notifications|Mail|Customise Notifications|Primary Inbox - Turn on alerts.

No idea what this was set to before the update but was turned off after, I now get alters/ding on my locked home screen.

I've noticed every time someone posts @ this issue the same person replies (nearly gaslights) that it is not an apple software issue despite the evidence to the contrary. all this "troubleshooting" advice didn't work for me and i tried a number of the suggestions. And grant it, may not be all phones etc., but clearly when everything works and only ONE change is made (software update) and then it doesn't work, well that's pretty causal. And since you even took your phone in... and same result!

FYI, i gave up. I now use the gmail app. Works beautifully.

There may be multiple issues. In my case (mail app, with yahoo mail), it is consistent. The private relay turned on again at night and mail stopped updating. I turned it off again, and mail started updating again. Are you sure private relay didn’t turn back on?

Of course, I don’t consider that a solution, rather a workaround. There seem to be an issue(s) with mail app after IOS18 that still need to be fixed!

Yahoo and gmail do not push to the Apple Mail app; they stopped push service several years ago. Each will push if you have the gmail and Yahoo apps on your iPhone. You can still do timed fetch. Currently the only mail services that actually push are iCloud and Microsoft Exchange. On top of that, Yahoo no longer uses the Yahoo mail service; earlier this year Yahoo (who owns AOL) assigned all mail service to AOL’s servers.

So no, it is not an Apple problem, it is the result of 3rd party email providers no longer sending Push notifications to Apple Mail.

Dec 31. I found my own solution. I downloaded the Gmail app. Moved IT to my primary spot. It works fine and all email showing up. I was using Gmail forwarding prior... Mail App still not working. But now I have alternative. Should have done this more than month ago, but assumed since problem started with software update, it would soon be corrected via another update. Tick tock...nope.

I agree. I fixed my Gmail issues (all other mail accounts were fine) on my iPhone via WiFi after 18.2 after turning off site blocking feature on my Internet Provider side. No issues since. Adjusted a few of the new notification settings on iOS and no complaints. I’m positive any issues people have is to do with tighter security implementation on iOS 18.x

If you haven't tried these

Turn Off Low Data Mode

Ensure Focus Mode is Turned Off

Turn Off Low Power Mode to Allow Notifications in the Battery Section

Something else to check is your iCloud settings in your Apple account section in settings. Try turning off Private Relay here and see if that helps after a restart of the phone.

The Apple Tech Support rep I have been working with, for the past few weeks, does not agree with you. He said that Apple software engineers are well aware of this mail issue, and it is a software issue on Apple’s end, and they are currently working on an iOS update, to fix the bug.

Everything you suggested as a fix, has been tried by myself, and thousands of others, with no success.