Free in 3 steps — no store required, works on any Outlook
▶ Start InstallingGo to outlook.office.com and sign in with your Microsoft account.
Open any email in your inbox. In the top toolbar of the email, click the … More actions button, then select Get Add-ins.
In the Add-ins dialog, click My add-ins (left sidebar) → scroll to the bottom → click Add a custom add-in → Add from URL. Paste this link:
✓ Click Install — Check-it will appear in your Outlook ribbon immediately!
Open any email. In the ribbon at the top, click the Get Add-ins button (or go to Home → Get Add-ins).
In the Add-ins window, click My add-ins in the left sidebar. Scroll to the bottom and click + Add a custom add-in, then select Add from URL.
Copy and paste this URL into the input field:
✓ Click OK / Install — restart Outlook if needed and Check-it appears in your ribbon!
Open any email in your inbox.
In the email toolbar, click … More and select Get Add-ins. Or go to the top menu bar: Tools → Get Add-ins.
Click My add-ins → + Add a custom add-in → Add from URL. Paste:
✓ Click Install — done!
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