Can i un install Mail?

Question

my MAIL has stopped letting me recieve mail, my password hasnt altered, can i uninstall mail, and then reinstall or down load the app and start fresh?

Answer 1

At the expense of setting up your email account again in that account, you could delete the Mail preferences file.
When it is recreated, your Mail should then remember your password and create a keychain entry for that purpose.
Note, you will need to know your Mail username, password, isp or Mail server etc.
You can get these details from your other account that works, from accessing Mail Preferences > Accounts and clicking through those settings and write them down.
Log out and and return to your troublesome account and in Finder locate and trash the file.
~/Library/Preferences/com.apple.mail.plist
Now open Mail and recreate your account using the information you wrote down before. If it asks to remember your password you would affirm, yes.
This effectively renews your Mail account.