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Their webmail works fine, and when this account is added to the Windows Mail app, everything works perfectly. These are the common reasons why the IMAP folder is not syncing. To resolve the IMAP issue, I will explain different solutions in the upcoming section of the article. It's just a little bit technical, but we have an IMAP proxy that chooses from some different backend IMAP servers. If the user account ends up on an old IMAP server implementation (in that case f.i. a Cyrus imapd 2.4.17), IMAP Client of iOS 18 Mail app doesn't work. If the proxy directs requests to a newer IMAP server implementation (f.i Cyrus imapd 3.6.1), the iOS 18 Mail app works as expected, even the requests are handled by the same IMAP server proxy.
Why IMAP Folder is Not Properly Syncing?
Please report suspicious activity using the "Report Abuse" option. Windows 10 will reach EOS (end of support) FixTechGuide Windows update Outlook fix on October 14, 2025. For more information, see this article.
Chosen Solution
Suspect some Apple Dev's have been lazy with some code repair PST file without data loss in IOS18's mail.app and its causing the issue. I was a little hesitant but went ahead and let it completely remove all the synced items from the account off of my iPhone. After a minute, it was removed so just went and re-added it and BOOM. Decided to just try completely removing my Gmail account, the one that wasn’t syncing with the Mail App after the iOS 18 update.
IMAP folder sync issue in the new Outlook (moved emails not syncing to webmail)
If the server is down and you are experiencing issues, the problem IMAP folder is not syncing occurs. So, check the status of your IMAP server follow the steps below. These a general steps to check your IMAP settings in any email application. With the help of this, you can also ensure that the server settings are properly configured or not.
With the help of this, you can also ensure that the server settings are properly configured or not.It's just that the contents seem completely disconnected from what I see using webmail.I have not tried the add-on yet I am going to experiment.I use both webmail and Outlook desktop client to access my Gmail.And because of the size, this is making the mail simply stop working after one day of normal use, forcing the users to end outlook process to make the mail sync again properly...So, properly follow the above steps and backup your data from IMAP folders.So it must be something in IMAP protocol handling on the old server that makes the iOS Mail app go out of sync or crash the syncing mechanism on the iOS device.
My accounts in Mail app stopped to sync post update
It's not until I click on that folder I will then see the 10 and 3 and two second later it will sync and new ones will populate. The issue is; just looking at my email accounts and the numbers shown next to the folders I cant Outlook profile repair and recovery steps tell if there is new mail or not until I click on them. I have all desktop alerts turned off I prefer it this way I don't need all of that. I just want to be able to look and see new message. Even if I have an account with zero message I need to click to see the new ones there are no numbers appear.
Get email updates
Wonder if the vpn is causing an issue. Perhaps something in TB needs to be tweaked. I have no firewall monitors running during the day that would interfere just the vpn. I have several email accounts / IMAP set-up. So looking at my tree of email accounts one inbox might have 10 mail total and 3 unread form earlier.