Api hotmail jobs

We are a specialized company in responding to customer queries not sending ads randomly. We encountered a problem that when we reply to our customer questions via ema...procedure of classification of spam emails for many providers of email service. We also want to know how to deliver the email directly to the Inbox not Spam Box, especially in Hotmail.

I need 2 functions of API integrated in App to be corrected. PHP code is in codeigniter.