Depending on your version of @mail follow those directions:
If this is not what your version of @mail looks like, then go to Version 2 below. If it is, keep reading Version 1.
Version 1
Go to preferences
Then go to account preferences
Scroll down about 3 lines. On that 3rd line you will see what is called “reply to address”
Fill in whatever e-mail you want your recipients to “reply to” when you send them mail.
Then scroll down to the bottom right and click save settings.
Then send a message from your account to another e-mail you have or an e-mail of a friend and make sure it looks exactly how you want it to look.
Version 2
Go to settings
Scroll downto the appropriate field.
Fill in whatever e-mail you want your recipients to “reply to” when you send them mail.
Then scroll down and click Save Settings on the middle left.
Then send a message from your account to another e-mail you have or an e-mail of a friend and make sure it looks exactly how you want it to look.