Sets unread email count on the installed Outlook app icon using the Badging API.
Users
136
+19 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#74K
#62K among extensions
Version
0.2.1
updated 14 Jul 2026
Users
monthly, 6 months
Latest, 15 Oct 2026:136 usersMove the mouse over the chart for any month
Ratings count
monthly, 6 months
Latest, 15 Oct 2026:1 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Outlook Unread Badge
Outlook Unread Badge puts your unread email count right on the Outlook app icon in your Dock or taskbar — just like a native mail app.
Use Outlook Web or Outlook PWA? Install the extension and you'll see at a glance how many messages are waiting, without opening the window. The count appears as an app icon badge and, optionally, in the page title.
KEY FEATURES
- Unread count on the app icon (Dock / Taskbar)
- Optional counter in the page title, e.g. "(2) Mail - ..."
- Counts folders from your Favorites — you decide what matters
- Smart defaults: Drafts, Deleted, Junk, Sent and Archive are excluded out of the box, in any Outlook language
- Custom include/exclude rules per folder
- Works with work and school accounts behind Microsoft Defender for Cloud Apps (see below)
- UI available in 16 languages
SUPPORTED DOMAINS
- outlook.office.com
- outlook.live.com
- outlook.cloud.microsoft
- outlook.cloud.microsoft.mcas.ms (optional, opt-in)
WORK OR SCHOOL ACCOUNT BEHIND A SECURITY PROXY?
If your organization routes Outlook through Microsoft Defender for Cloud Apps (the address ends with .mcas.ms), enable "Defender for Cloud Apps (MCAS) Support" in the extension settings — or simply click the extension icon while on your Outlook tab and use the one-click prompt. The browser asks for permission for that single domain, and only after you opt in.
PRIVACY
Everything happens locally in your browser. No email content, addresses or browsing data is ever collected or sent anywhere.