Thank you for your feedback.
To change the sending name in Yahoo Mail, please follow these instructions:
Please note: Some third-party apps have their own sending name setting, which bypasses the Yahoo Mail setting. If the app you're using attaches a different name than the one saved in your Yahoo Mail settings, contact the manufacturer of the app for assistance.
Yahoo Support Team
An error occurred while saving the commentJim L commented
Hello , I have the same problem and tried the link listed . It does not work , however I am using a older windows 7 computer ....there ICON shows but when I click .....More Setting , nothing happens that I can choose ....Mailboxes or anything else to correct my name...
I dont know how my name got changed , any help would be great