How To Delete Multiple Emails / Text Messages (Global Delete) on a BlackBerry
You can easily delete multiple emails or texts on your BlackBerry smartphone. Here's how:
Scroll to and select your email icon.
Your emails will appear chronologically. You’ll notice that a dateline separates all the mail from one day to the next. Scroll to and highlight a dateline.
Press the BlackBerry menu button and select “Delete Prior”. This means that all mail from that date and prior will be deleted in a single keystroke.
Tips & Warnings
If your non-BlackBerry email account(s), gmail for example, also sends the same emails to your computer, which they should be, then you can always use your PC later to chronicle and archive the messages you deleted on your Blackberry, as they will still be present in Outlook or whatever mail server you use.
When setting up your email rules on your BlackBerry, you have the option to delete emails from your BlackBerry and your PC from your phone. The option I am referring to is “Delete from Handheld Only”. I chose this option because I rely on my home computer to manage important emails and use my phone to simply retrieve them. But you may wish to do it differently and BlackBerry provides options for both!