How Email Authentication Works (SPF, DKIM, DMARC)

Simple Explanation

When you send an email, providers want to confirm:“Is this sender legitimate?”Authentication proves your emails are truly coming from your domain.

What This Includes

  • SPF: Defines which servers are allowed to send emails for your domain

  • DKIM: Verifies the email hasn’t been altered

  • DMARC: Tells providers how to handle suspicious emails

Why This Matters

Without authentication:

  • Emails are more likely to go to spam

  • Some messages may be blocked entirely

With proper setup:

  • Your emails appear more trustworthy

  • Inbox placement improves

Advanced Details

When Rechat sends emails on your behalf, it must align with your domain.This is called DKIM alignment.To achieve this, Rechat is authorized to send using a subdomain of your domain, improving trust with providers like Gmail and Outlook.

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