Convert Existing Form Mail to use SMTP authentication

I contracted a RAC who provided me with deliverables for a simple web form project. This coder was not able to integrate SMTP authentication in the form. This is important 1) because we sort our mail by address, and 2) want to avoid any possibility of being labeled as spam if we simply change the headers. Attached are all of his deliverables, and also a snippet of the code I believe needs to be inserted and integrated into his code. ## Deliverables Attached files include: - previous coders work - my original mockup of how this will work