When you use the BlackBerry Gmail service to send messages from your BlackBerry device to another, they are stored in the Gmail Inbox as a conversation. They appear as new messages in the GMail Inbox.

But as the BlackBerry Technical Knowledge Center explains in a just-posted (and frankly a bit confusing) document entitled "Filter Messages sent from an integrated Gmail account," (link below) there's a way for you to create a filter that will prevent you from sending messages to or from a Gmail account on a BlackBerry device.

The document (which you can get to by clicking the Read prompt below this post) lists an eight-step procedure:

1. Log in to the BlackBerry Internet Service account.
2. Click filters beside the integrated Gmail account.
3. Click add filter.
4. Name the filter.
5. Click the drop-down menu beside apply filter when: and select the from field.
6. In the contains field, type the Gmail email account.
7. Select do not forward messages to handheld.

8. Click add filter.

Got that?