Outlook for iOS: app icon badge shows incorrect unread count after new mail arrives

Hi Umit,

Thank you for reaching out and for the troubleshooting steps you've already completed.

Based on the behavior you've described, it appears that the badge count used for push notifications may be out of sync with the unread message count that Outlook calculates after the app performs a full synchronization. The fact that the badge displays an additional 4 unread messages, then clears after opening Outlook and syncing, suggests there may be a stale unread count associated with one of the configured accounts.

To help isolate the issue, please try the following:

1. Identify the affected account

Since Outlook is configured with multiple account types, please temporarily remove all accounts and add them back one at a time, testing the badge count after each addition. This can help determine whether the issue is tied to a specific account (Microsoft 365, Gmail, Google Workspace, iCloud, or IMAP).

2. Check for unread items outside the Inbox

• In Outlook, use its search and search for: isread:no to look for any messages that may not be immediately visible.
• If any messages are found, please review the folder location shown in the search results, as unread items in folders such as Archive, Junk Email, Deleted Items, Drafts, or custom folders can sometimes contribute to unexpected badge counts even when the Inbox appears to be fully read.

3. Reset Outlook notification registration

• Open Outlook for iOS.
• Go to Settings > Notifications.
• Disable notifications for all accounts.
• Force-close Outlook.
• Restart your iPhone.
• Re-enable notifications and test again.

4. Test a different Badge Count setting

As an additional test:

• Go to Settings > Mail > Badge Count.
• Change the setting from Focused Inbox to All Mail.
• Monitor whether the badge count behavior changes.

This will help determine whether the issue is related to the Focused Inbox count specifically. I hope your issue gets resolved soon. Any updates would be greatly appreciated.

Hi,

Thank you for the detailed reply. I have already completed all of the suggested steps, and the issue persists:

1. I removed all accounts and added them back one at a time, testing the badge after each addition. The issue returned.
2. Searching for isread:no shows no unread messages in any folder (Archive, Junk Email, Deleted Items, Drafts or custom folders) in any account.
3. I disabled notifications for all accounts, force-closed Outlook, restarted the iPhone and re-enabled notifications. No change.
4. I tested both Badge Count settings (All and Focused Inbox). The behavior is the same.

I also checked all mail accounts directly with their providers; there are no unread messages anywhere.

To be clear, the problem is limited to the push notification badge in Outlook for iOS. The badge is correct whenever the app is open and synced, and Outlook for Mac with the same accounts never shows the issue. The extra count of 4 only appears when a new message triggers a push notification while the app is in the background.

Since every client-side step has been exhausted, this appears to be a stale unread count in the Outlook mobile notification service. Could this be escalated to the Outlook mobile engineering team, or could the notification registration or badge count for my device be reset on the service side? I can provide app logs or a screen recording if needed.

All the best,