Using MS FLOW to create & send an Email Message from within Dynamics 365 - How to set "To and From recipients", "How to trigger email send"

Hello, 

I would like to do the following;

From within MS Flow i would like to create an "Email Message" record in Dynamics 365, updated content including updating the "To" and "From" fields to use "systemuser" records and then trigger the email to be sent out from Dynamics 365 (Not an email message form outlook MS Flow) 

1. Create Email Message Record in Dynamics 365
2. Update content within created Email Message Record
3. Trigger Email Send from within Dynamics 365 

ISSUE: can someone assist with how i would set the To and From Recipients fields on the Email Message record using MS Flow, Also the correct way to trigger an email send from ms flow 

Regards,