Email deliverability is the rate at which emails make through the recipient’s inbox. This rate may get slow down because of failure in delivery. Whereas email Authentication is for validating emails for authenticity. In this blog, we will talk about email authentication and email deliverability. 

What is Email Authentication?

Email authentication is a technique use for validating emails for authenticity. In other words, it provides a way to verify that an email comes from who it claims to be from. Email authentication blocks fraudulent and harmful uses of email such as phishing and spam.


Email Authentication Important for Email Deliverability because

  •  Improves sender reputation and deliverability.
  •  Protects the brand image.
  •  Minimizes cyber threats 

Protocols of Email Authentication that improves Email Deliverability

Sender Policy Framework

Email Authentication Email Deliverability

SPF displays all the valid sources that authorize to send emails from your domain. SPF prevents domain spoofing. Each email has an IP address that identifies the server and the email service provider that your domain uses. The receiver’s email server validates the email against your SPF record to authenticate it. 

DomainKeys Identified Mail

Email Authentication Email Deliverability

DKIM is a standard protocol that assigns a cryptographic signatureWhen your email has been sent to the recipient, your server will generate a unique DKIM signature for the header of your email and your DNS records. Through DKIM inserting malware, phishing links, or spam are hard.

Domain-based Message Authentication, Reporting and Conformance 

Email Authentication Email Deliverability

DMARC helps administrators to eliminate attackers or hackers from spoofing their domain. DMARC is designed to empower domain owners with the ability to specify to receiving servers how they should handle messages that fail SPF or DKIM or both. 


Email authentication is important for all email marketers. Not only it increase the email deliverability rate of your campaigns, but it also ensures to protect your customers’ data, which in turn safeguards your business’s reputation.



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