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Email Authentication with SPF, DKIM, DMARC

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Email Authentication with SPF, DKIM, DMARC

Trust and permission is at the center of a successful email marketing strategy which makes it one of the most powerful marketing channels.

As a result, to avoid the spam folder, you need to prove to inbox providers like Gmail, Yahoo, and Outlook – the gatekeepers to your audience – that you are, in fact….you. Think of inbox providers as bouncers at a bar, they only care about two things: (1) do you have identification, and (2) are you worthy of connecting with crowd inside.

In order to get passed the bouncer, you don’t need to slip a fake ID and a $20 bill, it’s a little more complex than that. Here are a few things to consider to authenticate your email, prove who you are, and get past the spam filters:

  • Sender Policy Framework (SPF) – is an email validation protocol designed to detect and block email spoofing by providing a mechanism to allow receiving mail exchangers to verify that incoming mail from a domain comes from an IP Address authorized by that domain’s administrators.
  • Domain Keys Identified Mail (DKIM) – an email authentication method designed to detect email spoofing. It is a way to sign and verify email messages at the message transfer agent (MTA) level using public and private keys. The public keys are published in DNS TXT records. DKIM authenticates the source and its contents.
  • Domain-Based Message Authentication Reporting and Conformance (DMARC) – an email-validation system designed to detect and prevent email spoofing. It is intended to combat certain techniques often used in phishing and email spam, such as emails with forged sender addresses that appear to originate from legitimate organizations.

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