How to empty mailbox - BlackBerry RIM Computers & Internet

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.

Tell us where the mailbox is. Is it on your tablet? If so, what make and model? Or is it on the server of your mail host (like Hotmail or Gmail)?

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?

There should either be a delete button or erase message button. If it's a menu system go to delete old messages. Then delete your old messages either one by one or as a batch.. Also look for Mailboxes, select enter, then empty or trash or earase.

there is a system to delete mailbox in manual book u can use it or in mail box after selecting option u can find erase or delete option choose it click on yes u can delete ur mail

you should be able to do this by,first picking up the phone,push the up or down arrows,one or the other,and when doing so you will highlight a number,hit delete and that will delete only one at a time until all are done.good luck i hope i helped

Select the mailbox properties and select Advanced button and then Compact Now button.
That should take care of it, since it will compress the PST file.

Jules