MailSync Errors for Microsoft 365 Users
Incident Lifecycle
Incident Timeline
Monitoring
Our team has released an update to MailSync to fix the connection issues for Microsoft365 users. Currently, we have confirmed that Microsoft365 and Outlook users are able to successfully send SmartMail. Some users may continue to see errors or delays with emails syncing to the Life of the Lead for contacts until they disconnect and reconnect.
If you see continue to receive errors with your MailSync connection, we recommend users disconnect and reconnect their Microsoft365 and Outlook account...
If you see continue to receive errors with your MailSync connection, we recommend users disconnect and reconnect their Microsoft365 and Outlook account...
May 11, 2026 at 11:44 PM UTC
Identified
Our team has identified the cause of the issue and is working to implement a solution as soon as possible.
We will continue to share updates this page as they become available.
We will continue to share updates this page as they become available.
May 11, 2026 at 9:09 PM UTC
Investigating
Our team has received several reports that MailSync is not working for users who have connected this integration to email addresses hosted with Microsoft365 and Outlook. So far, MailSync users who have connected via Google are not impacted.
Our team is actively investigating these reports. We will continue to update the status page as we have additional updates.
Our team is actively investigating these reports. We will continue to update the status page as we have additional updates.
May 11, 2026 at 6:35 PM UTC
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