how to read a facebook message without taking off the notification?

[Raggamuffin]

Ok...

Well you could set up messages to be sent to your email inbox. Then you can read them in your emails and still have the notification when you log into facebook.

Home>account settings>notifications>Facebook>sends you a message (tick this box)


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It does not "forward" the message. A Facebook message is not an email & can't be forwarded to an email account like you seem to suggest...
It simply gives you an email notification (as well as a Facebook notification). I used to get them all the time. Definitely works. I stopped it because I didn't like having to get rid of double the notifications, seemed like a waste of time.