This document provides tips to improve email deliverability. It recommends having a good sender reputation by checking sender scores and sending initial emails to a small list. It also suggests cleaning the email list by segmenting subscribers and avoiding spam traps. Implementing a double opt-in process and making unsubscribing easy are also tips provided. The document advises monitoring email frequency, sending only relevant content, and authenticating the email server using SPF, DKIM and DMARC to validate emails.