If you can take a look at your mail server settings specifically the IMAP and SMTP. Make a note of the values and delete an overwrite them also check your passwords for both SMTP and IMAP. Make sure they are the same if you can’t see them look at the number of stars or dots.

Why IMAP Folder is Not Properly Syncing?

Meanwhile, the "connecting" or "Checking for mail..." just stays on the bottom status bar of the mail app. I deleted the Apple Mail work offline mode stuck app from the phone, reinstalled from the App Store. So only wait when some "smarties" from apple IT solve problem in app ... Apple programmers use no CD/CI - simple sometimes update by "sales-manager requests", and without any critical-bug-checks ... Full cleanup of ALL accounts is not a solution(and re-add even helps not).

Chosen Solution

Suspect some Apple Dev's have been lazy with some code FixTechGuide mailbox repair steps 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)

When you synchronize mail using IMAP between Gmail and a desktop mail client such as Outlook, there is a necessary delay between changes made independently at both ends being synchronized in both directions. When you are accessing Gmail via the web application everything is hosted on Google's cloud servers. 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. Maybe some encoding behavior or just a different linefeed or something that has changed over the years... Otherwise why even have the ability to auto-sync? If I need to click on each folder to force the sync/download from server then auto sync serves no purpose.

• Meanwhile, the "connecting" or "Checking for mail..." just stays on the bottom status bar of the mail app.
• 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.
• A stable connection between your email client and email server depends on the syncing of your IMAP folder.
• I will try the safe starts and experiment with the buttons ans see if it improves.
• I have no firewall monitors running during the day that would interfere just the vpn.
• After instalation ios 18 all my accounts in mail app stopped to sync( including icloud mail).
• It's usually not checked by default for IMAP to minimize network traffic.

My accounts in Mail app stopped to sync post update

I am also running QuickFolders and its the same nothing shows up on those tabs until i physically click on them. Ok so my mistake the Properties option is there when right inbox repair tool alternative clicking folder - I was only focused on right clicking on the email address to take me to server setting I was not clicking on the actual folder. I right click a folder and Properties and it take me to attached windows. I don't see - 'When getting new messages...





I checked all 5 of the tabs in this window that expressions is not there. This seems bizarre the email would not populate. A stable connection between your email client and email server depends on the syncing of your IMAP folder.