This is also a place where you can change your name on Yahoo mail while sending emails. How to change the name appears while sending an email? After that, tap on the “Edit” option and you can edit your first name, last name, and nickname as well.This is the time when you should tap on “Personal Info”.Now, tap on “Manage Accounts” and tap on “Account Info”.First of all, open the Yahoo Mail app and then, tap on the profile icon that appears in the top-left corner.You easily can change the name on Yahoo mail using the app version, for that you have to make sure to have a good connection and an updated Yahoo Mail app. How to change the name appears while sending an email?.