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Reach the inbox, not the spam folder

SPF, DKIM, and DMARC in plain English — what each one does, why mailbox providers care, and how to set them up without a deliverability degree.

Getting an email sent is easy. Getting it delivered — landing in the inbox instead of the spam folder — is where most senders quietly lose half their audience.

The three records that matter

Mailbox providers like Gmail and Outlook decide whether to trust you long before your subject line is read. Three DNS records do most of that talking:

  • SPF tells the world which servers are allowed to send on behalf of your domain.
  • DKIM cryptographically signs each message, so a receiver can prove it wasn't tampered with in transit.
  • DMARC ties the two together and tells providers what to do when a message fails — and sends you reports so you can see who's sending as you.

Authentication doesn't guarantee the inbox. But without it, you're starting every send from behind.

A realistic setup checklist

  1. Publish an SPF record that includes your sending provider.
  2. Enable DKIM and add the public key we generate to your DNS.
  3. Start DMARC on p=none to monitor, then tighten to quarantine and reject.

Once all three are green, your reputation does the rest — and reputation is earned one clean send at a time.