In Outlook, you can switch between Online and Offline mode. This will stop synchronizing selected/unsubscribed folders in your Outlook IMAP account.

Select all the Subscribed folders you want to unsubscribe and click the Unsubscribe.

Click the subscribe tab and then click Query.

Right-click on the folder for which you want to stop synchronization and choose IMAP Folders….

Similarly, if you want to stop synchronizing an email folder, you can unsubscribe from the folder.

When an email folder is subscribed, it’s automatically synchronized. When you use an IMAP email account in Outlook, such as Gmail or Hotmail, Outlook provides you with options to subscribe or unsubscribe folders. Method 1: Completely Stop Folder Synchronization Below we have mentioned some simple methods to pause or stop emails or folder synchronization in Outlook. Ways to Stop Synchronizing Folders in Outlookīased on your preference, you may choose to either completely or partially stop synchronizing folders in Outlook 2016 or Outlook 2019. In this article, we mention a few ways to stop synchronizing folders in Outlook 2016/2019. Thus, sometimes, it becomes necessary to stop the synchronization of specific mail folders, especially those that receive or contain several emails with large attachments, to save mailbox storage and ensure uninterrupted email flow. Furthermore, the synchronization may stop if the mailbox storage on the server exceeds the limit, preventing Outlook from sending or receiving new emails.

On the other hand, it will also consume a lot of mailbox storage on the server, which isn’t good unless server storage is not an issue. For example, if you often receive multiple emails every day with large or several attachments, it may take much longer to synchronize the mailbox items and affect the Outlook performance. However, it may take a while to complete depending on the number of mail items to synchronize and network speed. Whenever you open MS Outlook, it immediately tries to connect to the mailbox server and synchronizes the mailbox items to and from the mailbox server.īy default, synchronization is automatic. When you configure or add an, Exchange Server, or Office 365 account, Microsoft Outlook creates a synchronized copy of server mailbox items in an OST file (Offline Outlook Data File) on your local machine.

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