How to change Store "From" email and name
Changing all email addresses at once
If you are handing off your store to a client or would like to use a completely new email address for everything (like receiving order notifications), you can use a WP-CLI command.
Go to WP-CLI tab and enter this command:
search-replace firstname.lastname@example.org email@example.com
This command replaces all firstname.lastname@example.org entries to email@example.com address.