Email missing from activity center

Hi

To add the Email Tab follow these steps:

First Open the Record under which object you want to add the Email Tab.

Then Click on the Gear Icon. Select Edit Page.

Now Click on the Activity Tab as Displayed on the Page.

Then Search for activities from Lightning Component Search Box. Now Drag and drop this activities component to the Activity Tab Area on the Page. Click on save.

Now Open the Page Layout and check whether Email is added to the Salesforce Mobile and Lightning Experience Actions, if not added then drag and drop these actions and click on save.

Hope, Now you will be able to see the Email tab.

Thank You