Full cleanup of ALL accounts is not a solution(and re-add even helps not). I also noticed that some IMAP settings — like the root folder path (e.g. "INBOX") — are not available in the new Outlook, which makes troubleshooting more difficult. In the classic Outlook, I would normally check or adjust these. All default folder will show up as top-level ones and mail will start populating to the Inbox folder. For faster and more reliable delivery, add to your trusted senders list in your email software. Simply enter your email address OR username in order to reset your password.

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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 Office 365 sync problems and login fixes the Gmail subreddit about a year ago.

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Maybe some encoding behavior or just a different linefeed or something that has changed over the repair corrupted OST in Outlook years... I’ve never heard of setting a path before for email, so apologies if this is a simple solution to those who come across this in the future. If you can, turn off IMAP, require 2FA, and use the native outlook client. Having the same issue with some of our accounts on IMAP as well.

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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. 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 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.

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 Repair corrupted ost in outlook 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.

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It will synchronize deleted items if I delete an item from my phone, but it just wont receive new ones. IMAP accounts should update automatically on send/receive. 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. When you are accessing Gmail via the web application everything is hosted on Google's cloud servers.

• The problem can be caused by either improper settings or a damaged send/receive group within Outlook.
• Microsoft, gmail and other popular accounts should sync automatically, but if they don't, I'm inclined to think it's due to the VPN or a security/antivirus app that is scanning the TB profile folder.
• I checked on web mail here it is.one account is configured on two computers, one is configured with POP & second is IMAP.
• If you can go to another folder then right back to Inbox and suddenly see 100 new messages, they were there all along, they didn’t just magically appear in that second it took to switch back and forth.
• One other thing I would check for is corrupted OST files.
• Decided to just try completely removing my Gmail account, the one that wasn’t syncing with the Mail App after the iOS 18 update.
• Everything works great for the most part, except with our IMAP users.
• The issue persists with PC connected directly to the internet with no router or firewall in between.

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.



That’s why, here I am to help you in this situation by providing you with solutions. But, before that, let’s understand the cause of the issue. If I am sitting on my inbox and do a send/receive, no new mail will populate. The send and receive does not error, it looks to complete successfully. Doing a send and receive does not update the mail, and I have played with all kinds of settings in the send and receive groups but nothing seems to work.



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.