Cant delete a mailbox in Mail

[Mocean]

Hello all, Ive been using Thunderbird for the past couple of years but thought Id give Mail a try - set it up with my three email accounts but since changing my ISP I cant use one of my old addresses anymore - my problem is that I cant delete that mail box.
In Mail, on the left hand side I have the Mailboxes heading, then under that it says Inbox then under that I have my three email accounts. The one I want to deletes name is ghosted now but when I right click on it I can select delete mailbox, I get a Delete the Folder "XXXXX" warning box, I hit Delete but nothing happens.
Any ideas?

 

[MacHeadCase]

*moved thread to appropriate forum - Question on mail client not OS X itself*

 

[Mocean]

Ahhh sorry - thanks for moving it for me - was unsure of the right forum.

 

[Soulwar]

Have you tried to delete the account itself?

 

[transburgh]

I was having the same issue.

Go to "Mail" and click "Preferences".

Under the "Accounts" running down the left side there is a "+" and "-".

Click the "-" and the account will finally be removed.