Sending, receiving, and organizing email in Outlook.com
For Outlook.com, the pin option is available only when the inbox is sorted by date.
Try this:
- Open the inbox.
- At the top of the message list, select Sort by.
- Change the sort so the inbox is sorted by date.
- Hover over a message in the message list and select the pin icon.
Other supported ways to pin in Outlook:
- In the new Outlook for Windows, right-click a message and choose Pin.
- If pinning is still missing, verify the app is actually New Outlook and not Classic Outlook. A Microsoft Q&A answer states pinning is available in New Outlook for Windows and Outlook on the web, but not in Classic Outlook for Windows or Legacy Outlook for Mac.
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