Mail will not open - error message says home directory is full

Question

I am running 10.4.3 on a dual 800 PowerPC G4 with 1.5 GB SDRAM.
I also run 10.4.3 on one PowerBook G4 and 2 iBooks.
I retain on my computer a large number of email messages but have plenty of room in my .Mac file
I run several hundred email messages per day.
Three days ago when I attempted to open Mail, I rec'd error message "Mail cannot update your mailboxes because your home directory is full. You must free up space in your home folder before using Mail. Delete unneeded documents or move documents to another volume."
I have deleted many files from the home folder and moved others. I still get the same error message.
I have experienced no problems with accessing my mail using my PowerBook G4 with similar config and OS.
johncleek
Power Mac G4   Mac OS X (10.4.3)  

Answer 1

Try this:
Try the following:
With Mail quit and using the Finder, go to Home > Library > Mail.
Move the Mail folder to the Desktop.
Launch Mail and a new Mail folder (and account named folders within) will be created automatically.
All new mailboxes will be empty but if this allows the Mail.app to function properly, you can use the Import Mailboxes feature to import selected mailboxes or manually replace mailboxes from the old Mail folder one at a time to determine which mailbox was causing the problem