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?

Meanwhile, the "connecting" or "Checking for mail..." just stays on the bottom status bar of the mail app. I deleted the Apple Mail inbox repair tool alternative 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

I use both webmail and Outlook desktop client to access my Gmail. I am normally looking at the All Mail folder on Outlook. Whenever I drag messages from the All Mail folder to the Trash folder on Outlook, these messages Outlook Not Sending or Receiving Email remain visible in the All Mail folder when accessed via webmail.

IMAP folder sync issue in the new Outlook (moved emails not syncing to webmail)

The responsables of the mail told us to move all the mails from past years to a new account to reduce it's size, but after doing that it doesn't seems to be working. This problem isn't anything new, this happens every year or so, but this time it just isn't getting fixed. By reporting abuse, a moderator will be asked to review the content of this interaction to take further action, if necessary. Some reference links I read thru though I don't fully understand all of what is being discussed. I have not tried the add-on yet I am going to experiment.

• These are the common reasons why the IMAP folder is not syncing.
• 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.
• If the server is down and you are experiencing issues, the problem IMAP folder is not syncing occurs.
• 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 Stuck on Synchronizing Folders 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.





Mohit is a Microsoft Certified expert for all things Microsoft. He brings a unique perspective gained from nearly a decade of active participation in various IT forums, blogs, and social media. Through this hands-on experience, he has acquired knowledge in diverse domains like Microsoft 365 Cloud, On-Premise Exchange Server, AD, and Entra ID. At first, I was thinking it may be an issue with certificates, but it's not... I went to a bunch of online TLS tests and the mail server is fine and the certificates are trusted...