My mailbox is fully how do I empty or clear them.

https://www.manualslib.com/manual/303940/Panasonic-Kx-Tg7622b.html?page=60#manual

Samsung Galaxy S5 How to Delete Old Junk Emails in Inbox

hope that helps

With Webmail, you need to empty the Trash folder. With Thunderbird, Mail, OE, Outlook, or another mail program, you need to change the Account settings to remove the mail from the server when deleted.

If this is a problem with a the mailbox on a phone, you posted to the wrong category, "Problem with PC Desktops" and should possibly call the phone provider for instructions, default password, etc..

Call your number and enter your voicemail password, then make sure all the messages are deleted.

You can open messages and choose the option to MARK all the messages on the BOX -ONLY if you want to delete them all.
Once marked choose the option to delete them fully.

which email service do you have?

http://www.home-electronics.net/ge/pc/user-manuals.asp
Try this site.... personally, I could not find your exact model number. Hope this helps somehow.

u have to delete all mailboxes and recreate it...

access system manager mailbox
listen for change a mailbox
enter mailbox #
It will ask if you want to delete security code
you need to know manager mailbox number and password though.
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