Email & Outreach
SPF, DKIM, and DMARC
Also: Email Authentication
The three email-authentication standards that prove your mail genuinely comes from you, which mailbox providers increasingly require to deliver it to the inbox.
Why it matters
Without proper authentication, your email is more likely to be filtered or spoofed, and major providers now effectively require these records for reliable delivery, so they are table stakes.
What good looks like
A correct setup has SPF authorizing your senders, DKIM signing your mail, and a DMARC policy aligning the two and telling receivers how to handle failures.
Related terms
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