iOS 18.5 Mail app stuck on loading screen when forwarding or replying to emails with images in Microsoft 365 accounts

Hello. Ever since iOS 18.5 has come out those users in my environment are complaining that when they forward or reply to an email, it is stuck on the compose screen showing "LOADING" for a very long time. This seems to only be happening with emails that have images in it. The email accounts in question in their mail app are Microsoft 365. Is anyone else seeing this? Our users who have not yet updated to iOS 18.5 do not seem to be complaining about this issue and if I open and forward the same email on their devices, it loads right away whereas those on 18.5 are sitting on the loading screen.


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Posted on May 22, 2025 6:48 AM

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Question marked as ⚠️ Top-ranking reply

Posted on Jun 4, 2025 3:28 PM

Having same issue. When I try to open mail app, greeted with a blank white screen. Need to force close the app and reopen several times before it works. Most of the time I'll need to reboot the phone.


iPhone 12 Pro Max 256gb

iOS 18.5

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Jun 4, 2025 6:05 PM in response to bloody_x

What is happening on my iPad mini after updating to OS 18.5, is that I have flagged email in my inbox. As I read thru each 1, I unflag it unless it needs further attention. Then I delete the unflagged items or move them to a different folder. But now: often the folder where I want to put the message is grayed out-so I have to send each to the trash & then from there I can put it in the desired folder. Also several items I have unflagged & moved now return to my inbox again (often marked as flagged again)! The last update was bad enough when the added an extra step just to move a piece of mail. Very annoying!😡

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Jun 5, 2025 12:41 AM in response to bloody_x

I have te same probleem here Iphone 13 mini. Sometimes screen is completely black. Or when selecting an email the app becomes frozen.

rebooting the complete iphone is the only thing what helps. This really needs to be fixed, this is an important app of the phone.


till now i have no problems on my ipad 🤞

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Jun 5, 2025 3:31 AM in response to bloody_x

Same here on an old iPhone XR with #IMAP email configuration. Reconfiguring the email account does not solve the issue. Email on my MacBook is running fine, so it must be an #iOS 18.5 issue.


Apple iCloud mail is running fine btw.


Please fix this a.s.a.p. @Apple Support!

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Jun 5, 2025 5:53 AM in response to bloody_x

This just started happening to my wife and I at the same time. I’ve upgraded the 18.5 a week or so ago. I have iPhone 13 Pro. My wife just has the iPhone 13. I’m wondering if this is a server issue with Apple. Strange how it’s starting to happen to everybody around the same time.

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Jun 5, 2025 7:57 AM in response to bloody_x

iPhone 12 Mini (64 GB)

iOS 18.5


Similar problem - Mail app locks up when trying to view emails in inbox. Inbox emails are not displayed. The 1st time it happened I thought I had accidently deleted all of my inbox emails. Sometimes I can close/open app to get it working again, other times it requires a reboot.

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Jun 5, 2025 10:31 AM in response to bloody_x

As with many folks who have already reported, Apple Mail app is mostly not working... glitchy, blank screen, and it crashes, etc. If I have to reboot the phone all the time to make the app work, that's a no-go for me. iOS 18.5 is what my phone is running.


Apple, please fix the Mail app.

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iOS 18.5 Mail app stuck on loading screen when forwarding or replying to emails with images in Microsoft 365 accounts

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