Get the Zoom meeting add-in for Outlook

1. In classic Outlook, from Mail, on the Home tab, select  All Apps > Add Apps.

2. In the search box at the upper-right, enter zoom. 

3. From the search results, choose Zoom for Outlook Extension, then select Add and follow any further instructions.
   
   Tip: For more info on using Zoom, visit the Zoom Help Center.

If you're looking to zoom in or out on message text, see Zoom in or out.