To create a backup of the Evolution mail settings within the Evolution app, open it up and click the “File” menu. Inside “File,” look for the “Back up evolution data” option and select it. Selecting this option opens up a file browser. This file browser will allow you to save a TarGZ backup of your email data.
Where does Evolution store emails?
Evolution now uses the standard XDG locations: ~/. local/share/evolution for user data (so all locally stored email should be here);
How do I setup my evolution email?
To Set Up Evolution
Select Mail Accounts, and click Add(+). In the Account Management screen, enter a name to identify this account and click Forward. In the Identity screen, enter your full name, email address and any optional information you want to include and then click Forward.