Printer - scan - email

[beetle]

Hi all,
I have recently got a printer (multifunction ) and it scans copies etc.

I need to scan and email the scanned item to me
but It says not registered.

Its a brother multifunction and the instructions dont actually explain what to do.  Anyone have a printer that can email  a scanned item ?
Its working on the wifi,  I run it off my tablet. 

I dont know what it means about not registered, the only address saved on the printer is my email.
Im presuming im scanning the doc correctly  and not blank papers

Help

beetle