How to set up DKIM on Squarespace

Step by step DKIM setup for Squarespace: complete instructions, examples, verification commands, and common pitfalls.

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This is a reference guide for configuring DKIM on Squarespace. Use it while editing DNS or when troubleshooting deliverability.

Tip: Configure DKIM for Squarespace in minutes. This guide keeps it practical and safe. Then verify everything with the InboxGreen Free Checker.

Provider-specific notes for Squarespace

  • Squarespace domains include a DNS Records section in Settings. For external domains pointed at Squarespace, add TXT records at your registrar.
  • Squarespace Email Campaigns generates its own SPF and DKIM values. If you also use an external ESP, merge the SPF includes rather than creating a second record.
  • Squarespace → Settings → Domains → Edit → Advanced settings → External DNS.

What you’ll need

  • Access to Squarespace to generate a DKIM key and selector.
  • DNS provider access to publish a TXT record at selector._domainkey.

Generate your DKIM key

In Squarespace, generate a DKIM key and note the selector. Providers often suggest something like squarespace (check Squarespace domain settings).

Squarespace → Settings → Domains → Edit → Advanced settings → External DNS.

Publish the record

  1. Create a TXT record at host selector._domainkey (replace selector with your actual selector name).
  2. Paste the full value starting with v=DKIM1; k=rsa; p= and save.
  3. Wait for DNS propagation.

Verify DKIM

  • Send a test email to a Gmail address and use “Show original” to confirm “DKIM: PASS”.
  • Or run: 
    dig TXT selector._domainkey.yourdomain.com +short

Common mistakes

  • Using the wrong host so the record becomes selector._domainkey.yourdomain.com.yourdomain.com.
  • Breaking the value by wrapping or truncating the TXT string.
  • Publishing a record for the wrong selector and then validating on another.

Related for Squarespace

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Pro tip: Turn on InboxGreen Monitoring to check these records daily and get alerts if something breaks.

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