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Why DNS records matter for email deliverability

When you send campaigns through Sendigram, email providers (like Gmail, Outlook, Yahoo) check whether your messages are legitimate and safe. The way they do this is by looking at your DNS records — technical settings connected to your sending domain.

Correct DNS setup is one of the most important factors in ensuring your emails reach the inbox instead of spam.

1. What Are DNS Records?

  • DNS (Domain Name System) records are entries in your domain's hosting provider settings.
  • They act like an "ID card" for your domain, showing that your emails are really coming from you.

2. Key DNS Records for Email Marketing

  • SPF (Sender Policy Framework): Tells receiving servers which platforms (like Sendigram) are allowed to send emails on behalf of your domain.
  • DKIM (DomainKeys Identified Mail): Adds a unique digital signature to your emails, proving that the content wasn't altered.
  • DMARC (Domain-based Message Authentication, Reporting & Conformance): Gives receiving servers instructions on how to handle suspicious emails (reject, quarantine, or allow).

3. Why They Matter for Deliverability

  • Prevent Spoofing & Phishing: Without DNS records, spammers can forge your domain.
  • Improve Trust: Email providers trust properly authenticated domains and are more likely to place messages in the inbox.
  • Boost Reputation: Consistent DNS authentication builds your domain's reputation over time.
  • Reduce Spam Complaints: When messages are authenticated, fewer recipients will see them flagged as spam.

4. What Happens Without Proper DNS Setup

  • Emails may go to spam or not be delivered at all.
  • Your domain could be flagged as untrusted by major providers.
  • Campaign metrics (like open and click rates) may drop due to poor inbox placement.
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