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. See the attached picture for the Properties window for a user-created folder. If these methods do not work, then contact the support team of your email provider. So, here are the solutions you solve the problem of the IMAP folder not syncing.

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 support for Office 365 on October 14, 2025. For more information, see this article.

Chosen Solution

I work in a small company and for the past 2 weeks we've been having issues with customer support Outlook account. The account is used as IMAP in all customer support clients, every time you set up the mail in anyones computer FixTechGuide Outlook repair tutorial it just sync 30-50GB ost files... 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... But only when you close/open the mail again.

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

Microsoft Outlook is terrible in IMAP. Hence most people only use MAPI with it. If you are forced to use IMAP, I would recommend switching to an alternative E-Mail client like Thunderbird Thunderbird — Free Your Inbox.

• Suspect some Apple Dev's have been lazy with some code in IOS18's mail.app and its causing the issue.
• For example, you can disconnect from the Internet and make changes.
• So, here are the solutions you solve the problem of the IMAP folder not syncing.
• But only when you close/open the mail again.
• I access the IMAP servers from 3 different machines, and they all see the changes from each other.
• That’s why, here I am to help you in this situation by providing you with solutions.

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 fix MFA prompts not working 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...

Get email updates

J.D. Power 2024 Certified Assisted Technical Program, developed in conjunction with TSIA. Based on successful completion of an audit and exceeding a customer satisfaction benchmark for assisted support operations. For faster and more reliable delivery, add to your trusted senders list in your email software. EDIT - the folder check add-on is for older versions of TB. We will never ask you to call or text a phone number or share personal information.