If the ExtendSync add-in isn’t visible on your Outlook ribbon, follow the steps below based on the version of Outlook you are using.
New Outlook or Outlook on the Web
Step 1: Open Customize Actions
Select any email
Click the three dots (⋯) in the toolbar
Choose Customize actions
Step 2: Enable ExtendSync
Find ExtendSync in the list
Check the box next to it
Click Save
Step 3: Reload Outlook
Close and reopen Outlook (or refresh the page if using Outlook Web)
ExtendSync should now appear in your message toolbar.
Classic Outlook
Step 1: Open Outlook Options
Go to:
File → Options
Step 2: Customize the Ribbon
Select Customize Ribbon
Under Main Tabs, check the box for Add-Ins
Step 3: Save & Reload
Click OK
Restart Outlook
The ExtendSync add-in should now be visible on your ribbon.
Still Not Seeing the Add-In?
If ExtendSync still does not appear:
Ensure the add-in is installed from Get Add-ins / My Add-ins
Verify your Outlook client supports add-ins
Try switching between New Outlook and Classic Outlook modes (Windows only)
If you continue to experience issues:
💬 Chat with us (bottom-right of this page)
📧 Email cloudextend-support@celigo.com