How To Print From POP3 Account Using Android Ver 6.0.1 Email Program

[mctabish]

I have a ZEN Z10 and a brother 9970 printer.
I have Brother iprint service installed and it can print from my wife gmail account.
But, what I need to do is to print POP3 emails.
I have seen references to "share" the email to the printer, but I don't see a share option from the menu.

So...
How do I print an email? My wife is a non techincal person and would like to print straight from a menu.

Help
Thanks
Bruce