ClickZ recommends using multiple authentication protocols, including SPF, Sender ID, and DomainKeys Identified
Mail (DKIM) to ensure your email message will get verified no matter which authentication protocol the receiving mail server uses (download our Advanced Deliverability brochure to learn more about our authentication solutions for law firm markete
Mail (DKIM) to ensure your email message will get
verified no matter which authentication protocol the receiving
mail server uses (download our Advanced Deliverability brochure to learn more about our authentication solutions for law firm markete
mail server uses (download our Advanced Deliverability brochure to learn more about our authentication solutions for law firm marketers).