I want to send email to the user from a specific email adress.
Does anyone know if this can somehow work?
yes, if you do it correctly then it will work...
How to send an eMail
EDIT: for this one of the other solutions might be the better choice...
Different eMail solutions for App Inventor
Taifun
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by 
Taifun.
I can't find anything.
Could you please be more specific.