Which practice most affects email deliverability?
- A Domain authentication with SPF, DKIM and DMARC, plus permission-based lists
- B Using more images
- C Sending at the same time daily
- D Longer email copy
Answer
Domain authentication with SPF, DKIM and DMARC, plus permission-based lists
Purchased lists generate complaints that damage sender reputation for every future send, including to legitimate subscribers.





