Is there any quick way to select a couple of pictures or even all pictures to send to blackberry messenger? we know that other phones have this kind of mark all option..
Thanks

Nope. BB Messenger is not designed for this. Simply attaching a single file is a feature that was added not too long ago. It's a business device with it's roots still firmly planted in the corporate environment.

Ohh, so if we want to send 10 pics, then we actually need to do it 1 by 1 is it? :(

yup

You can send multiple pics in one email, but BBM is not designed as a media sharing app. It's an IM app designed for conversations. You can attach some graphic files, but that's not the focus of BBM. I've never seen an IM program that lets you do more than 1 picture at a time, at least not on a mobile version.