Tag Archives: Deliverability

The List-Unsubscribe header

How to use the List-Unsubscribe email header for easier unsubscription request handling.

DKIM and ADSP: State of deployment

Author Domain Signing Policy (ADSP) is a new specification which gives a policy hint on what to do when the DKIM verification fails. This post details rate of adoption and problems.

A Modern Message Transfer Agent

How Genius.com uses MessageSystems to manage all aspects of our email delivery infrastructure from initial sends to reputation to bounce processing to capacity scaling