Email authentication allows ISPs (Internet Service Providers) to properly identify the sender of the email, and it helps to ensure high delivery rates. The technologies of authentication focus on reducing spam, which makes up 67% of all email traffic (according to Forrester Research). It means that while receiving 10 emails, only 3 of them are worth the user's attention to read.
In order to overcome the problem of spam, IETF (Internet Engineering Task Force) accepts several versions of authentication technologies. Two of them are used in SendPulse for phishing prevention and also spam blocking.
1. DKIM (Domain Keys Identified Mail)
This technology DKIM allows companies to vouch for the email messages they send. Technically this is done with the help of a cryptographic signature linked to a domain name instead of the traditional IP address. To determine the sender’s reputation, “whitelists” and “blacklists” are used.
2. SPF (Sender Policy Framework)
This technology allows companies to identify the sender of an email and check whether the flow of emails includes spam messages. In this way, emails can be divided into “permitted” and “not permitted” depending on the recipient’s or sender’s domain.
In our service, your emails are authenticated automatically with the digital signatures of SendPulse, but it is possible to set up your own DKIM and SPF authentication. In this case, SendPulse displays your domain’s information in the email’s header. To implement this, you should add your DNS records.
Set the email authentication by following this guide, which will help you to edit your DNS records.