Email Delivery

Overview
Note there are two very different classes of volume/priority/urgency/required deliverability:
 * campaign / marketing / newsletter delivery
 * non-campaign / transactional / alerts / updates / password changes

This page is currently oriented to SMTP relay / smarthost providers for transactional email delivery.

Services

 * SendGrid
 * SMTP
 * SocketLabs Email On-Demand
 * Postmark
 * AuthSMTP
 * CritSend

Tips

 * Spamassassin: Avoiding False Positive (For Senders)
 * Email Deliverability & You (And Your Startup)
 * Deliverability.com - group blog from the email deliverability community