After a minute, it was removed so just went and re-added it and BOOM. One other thing I would check for is corrupted OST files. Turn off cache mode, delete or rename the OST file, and then turn cache mode back on.

Additional resources

Furthermore, when calendar invites are accepted using the Outlook client, they disappear from All Mail and go into the Trash folder, but when using WebMail, they remain in the Inbox. I have seen this disparity for years across different Outlook client versions and Windows versions. I also posted on online Outlook email repair utility the Gmail subreddit about a year ago.

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Creating a new OST file clears up a host of weird problems with Outlook. This also caused some issues as outlook did not know where to store deleted or sent items and through up several errors. What about changing the root folder path, in account settings, to "Inbox". It seems to do the send and Office 365 Sync Errors Fix receive and get new mail when in offline mode, but not when online.

Chosen solution

By web app, I mean webmail accessed via Firefox or Chrome for (say) Windows 10, not smartphone app. My comment about 3rd party email -- is a 3rd email app called Email - Edison Mail (from the App Store) I set up my mail accounts in the app and everything works as it should. I’ve tried repairing the data file, removing and re-adding the account, rebooting, re-installing Outlook/Office, running SFC/DISM, all to no avail. Their webmail works fine, and when this account is added to the Windows Mail app, everything works perfectly. One word of warning - you shouldn’t set that interval to more often than maybe every 10 minutes, every 5 would be the absolutel minimum I’d set. If you set too often you run the risk that Outlook could start the next download before finishing the previous download and that could cause duplicate messages and other possible issues.

My accounts in Mail app stopped to sync post update

While these solutions work, there is are chance that it will happen again. To avoid that, you have to take some mailbox not updating on IMAP precautionary steps. Pit Stop - Most of our email accounts are for small retail location. We just use POP in those locations because they do not access their mail from any other device or location.





Just a few seconds after sending, my phone will show that I have a new message on my IMAP, but currently I have been waiting 10 minutes on my Outlook (2 send and receives) and no email listed yet. If an IMAP Inbox isn't displaying new messages as they arrive at the server, but only when the Inbox is selected, there is something wrong with the setup. Run TB in safe mode (hold Shift when you launch TB) and see if it makes any difference. Note also that when you click Get Messages, only the currently selected account is checked; click the drop-down to check a specific account or Get All New Messages (Shift+F5). The setting isn't present for folders that are automatically checked, such as Inbox.

• Meanwhile, the "connecting" or "Checking for mail..." just stays on the bottom status bar of the mail app.
• Apple programmers use no CD/CI - simple sometimes update by "sales-manager requests", and without any critical-bug-checks ...
• Even if I have an account with zero message I need to click to see the new ones there are no numbers appear.
• It's just a little bit technical, but we have an IMAP proxy that chooses from some different backend IMAP servers.
• When you are dealing with any problem, it is important to understand the reasons behind the issues.
• I have half dozen mail accounts a few microsoft a gamil and some other ones and there is no difference they are all acting the same.

Hate to be a Debbie Downer, but why are you using IMAP? A primary way to compromise an O36 user is phish a user, steal their creds, and connect via IMAP to get a copy of a whole mailbox. By reporting abuse, a moderator will be asked to review the content of this interaction to take further action, if necessary.

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

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. Suspect some Apple Dev's have been lazy with some code in IOS18's mail.app and its causing the issue. Decided to just try completely removing my Gmail account, the one that wasn’t syncing with the Mail App after the iOS 18 update. I know this is not very helpful, but we ran into exactly the same issues as you with one of our clients using Outlook 2010/Win7 and Godaddy’s IMAP mail and never truly figured it out.



These methods help you in the synchronization process. If this does not work, you can contact your email provider. After that, it is also important to secure your IMAP folder to prevent this issue from happening in the future. So, properly follow the above steps and backup your data from IMAP folders. I am aware of the difference between Gmail's labels vs. Outlook's folders, but I would expect that Gmail does what is necessary to make the folders appear correct over the IMAP connection to Outlook. For example, if I drag a message from Outlook's All Mail folder to Trash, I see that message disappear from the Inbox folder after a short delay.