Adding Folder to my list

I am trying to add a folder to my folder list but I am getting this message and cannot find out how to fix this issue. Please help.

[IMAP] Creating or updating folder ‘/Jeffrey McElwee’ failed due to the following error: quota exceeded

Thanks, Ken

That means either your email provider doesn’t allow you to add the folder where you are adding it, or you have already reached the number of folders you can add.

Sometimes they may allow you to add it through webmail, so you can try there.

Thanks Gary,
I tried and deleted several folders from the gmx.com email server and tries again but still no luck creating one on here.
Ken