Why does foxmail always prompt that the mailbox is full?

Prompt that the mailbox is full because the mail in the mailbox has reached the storage limit. Just delete the useless emails. The specific cleaning method is as follows:

1. Open Foxmail software in your computer and click Tools Options on the page, and then click Remote Mail Management Options in the pop-up menu.

2. Press ALT+A on your computer to select all emails, click the Receive button on the page, and then click the Execute button.

3. Click the account management option on the page.

4. Click Account Management on the page to change the storage time under the server option to one month to prevent the mailbox from being full again.