Troubleshooting: How can I expose the ExtendSync Add-In to the ribbon in Outlook

To expose the add-in to your ribbon bar, do the following:

Step 1: Select an email and click on the 3 dots > Customize actions.

Step 2: Mark ExtendSync then hit Save.

Step 3: Reload Outlook.

Step 1: Go to File > Options.

Step 2: Select Customize Ribbon then on the Main Tabs, tick the Add-Ins box.

Step 3: Save the changes and reload Outlook.