16. Deliverability: Common Issues When sending html, you must send text Image to text ratio Your list is a problem Opt-in? Does it matter? Everyone has an opt-in list How can you prove it What does this even mean? Temporal opt-in How old are the “opt-in” addresses on your list? When was the last time you touched them?
17. Deliverability: Engagement Content is out, Engagement is in ISPs monitoring abandoned email accounts Why bother sending if nobody is listening? Spamtrap vs. Honeypot Keep track of your user engagement Interaction with your service Clicks and opens Segment accordingly
18. Sending Reputation IP-based Reputation Return Path Sender Score http://senderscore.org Cisco IronPort Sender Base http://senderbase.org Blacklists Not all created equal Add/removal policies & who is referencing? http://multirbl.valli.org/lookup/ Goodbye IPv4 Transition to domain-based reputation