Any possibility to have FEW templates to choose from under EMAIL button?

Salut!

Is there any way you introduce few templates to under email option on (Sales Invoices and Receipts and Payments)?
I guess that is not too big work to make it and would make a great solution for some of us.

Thank you!

http://prntscr.com/nj4pov

Thank you,
Dario

setting email templates is already possible in Manager.
read the guide https://www.manager.io/guides/10392