[bev3304]

Newbie question: I receive a lot of mail. I can delete one at a time, but how do I delete more than one at a time? How do I select several messages to delete? Blackberry 10.

[hamsterwheel]

Welcome to CrackBerry!

While in your email account, click the three overflow buttons on bottom right, then select more, and select each one you want to delete, then click the trash can.

[gnirkatto]

Or, even a tad quicker, when in the hub, tap and hold a message that you would like to delete.
A side menu will pop up. Tap the more icon (the check marked box).
Select as many more elements (emails, texts, BBM etc.) as you want to delete.
Tap the dustbin.
Done.