So I had found this really REALLY helpful blogpost on how to set up Incoming Mail in SharePoint 2013. Basically this setup allows a Document Library to receive email into it.
The guide below is done on SharePoint 2010, i have tried it on SharePoint 2013 and everything seems to work.
Big ups to SharePoint George for a cool blog post:
Configuring incoming email in SharePoint 2010 with Exchange – Step by Step Guide
Enjoy…