Can't update my mail password on Macbook Air I recently changed my Gmail password, and as expected, the mail app can't log in to that account anymore. It says "Login Failed" in the top right. 

The problem is, I can't figure out how to update the password so it works again. When I go to "accounts" in "preferences", there's literally no password field. It lists Description, Alias, Email Address, Full Name, Incoming Mail Server, User Name, Outgoing Mail Server, TLS Certificate. That's it.

When I try to "add account" in the file menu, I type in my info and it of course says that account has already been added. 

Is there any way to just wipe out the account and start over? Or is there some other way to update the password?

Edit: Added picture.
It looks like you are trying to send out emails from your Gmail account using Apple's iCloud as SMTP server which is not correct. Here's what you can do: 

Open Mail > Preferences > your Google account > in the dropdown menu select Outgoing Mail Server (SMTP) > Edit SMTP Server List

Ensure that the settings match the following:


Outgoing Mail (SMTP) Server - Requires SSL/TLS: smtp.gmail.com
Port: 465 or 587
Requires SSL: Yes
Requires authentication: Yes
Full Name or Display Name: [your name]
Account Name or User Name: your full Gmail address (username@gmail.com). 
Password: your Gmail password


More info on Google Support Docs: Change SMTP settings to check Gmail on other clients