configuring emails to go through postmarkapp.com
I am using PowerMessanger 1.0.2 and I am using DataAssist to send emails out. I have my site on GoDaddy and their server is not great to have emails avoid spam flagging. I setup an account with postmarkapp.com. I can go through their server when sending emails. I can use smtp or API. Both PM and DataAssist allow me to ID an email server, but that is all. I also need to submit a port, user/pw and authentication with SMTP. How do I do this, or should I use the API, and if so, I do I set that up?