Help! I am getting a message saying that the inbox is full. "The folder Inbox is full, and can't hold any more messages. To make room for more messages, delete any old or unwanted mail and compact the folder." I have either deleted or archived off to a local folder more than 2/3 of the messages in the inbox. I am still receiving the message and I am unable to download any new messages. I have other email accounts with more messages in the inbox and I don't have any problems with them. I have tried: 1. Deleting messages. 2. Archiving messages to a local folder. 3. Deleting and reinstalling Thunderbird. Nothing has worked. Please help.