problems with outgoing email password

Use your browser to log into your mail account and change the password there—and test,

then make a change in the mail.app to reflect the change.

You can delete old password in your Keychain Access.app if necessary

HarryTolland wrote:

Some days ago, I was having trouble with email on my MackBook Pro. I went to settings and was told to change my password, which I did. Now, whenever I start up my computer and send the first email of the day, I have to go to settings again and type in the new password. The old password is still the one showing. How do I get rid of the old PW and save the new PW? This happens only with outgoing email. A few days ago, I couldn't receive email but that seemed to resolve itself after restarting a few times.

Mail>Settings>Server Settings make a change