Using New Outlook on Windows for professional communication and productivity
The Pin command for Outlook add-ins must be accessed from More apps on an email message’s ribbon, not from the general Apps/navigation flyout shown in the screenshot.
Pin an add-in in New Outlook
- Open Mail.
- Select an email so it appears in the Reading Pane, or open the email in a separate window.
- On the message ribbon, select More apps. Alternatively, select Apps on the message action bar.
- Right-click the required add-in.
- Select Pin.
The add-in should then appear on the message ribbon and action bar. Microsoft documents this location specifically for pinning add-ins in New Outlook.^1^
The menu in the screenshot is a different surface. Seeing only About there does not provide a setting that can be changed locally to add Pin.
If Pin is also missing from the message ribbon
Check the following conditions:
- Open a supported item first. Add-ins are exposed according to whether they were designed for reading messages, composing messages, or appointments. An add-in installed by an administrator appears only on the surface for which it was designed.^1^
- Test both read and compose mode. Open an existing message for read mode; then create a new message for compose mode. Pinning does not carry across these modes because an add-in can define different interfaces for each one.^2^
- Ensure Outlook is online. Installed add-ins may not appear on the ribbon or action bar when New Outlook starts without an internet connection.^1^
If you mean keeping the add-in pane open
That is task-pane pinning, which is different from pinning an app shortcut to the ribbon. The pin icon appears inside the opened task pane and keeps that pane open when another message is selected.
This capability must be enabled by the add-in developer in its manifest:
- Unified manifest: the action needs
"pinnable": true. - Add-in-only XML manifest: the task-pane action needs
<SupportsPinning>true</SupportsPinning>.^2^
If the three third-party add-ins in the screenshot have no Pin command on the message ribbon and no pin icon in their task panes, there is no New Outlook user setting that can enable it. The add-in vendor must confirm that its current manifest supports the relevant pinning behavior; for centrally deployed add-ins, the Microsoft 365 administrator may need to deploy the vendor’s updated package.
References