Custom email authentication helps prevent your campaigns from being marked as spam. For custom emails that match your domain (e.g., [email protected]), domain verification is essential for email deliverability.

For domains registered through Squarespace, verification is automatic. For third-party domains, you can either:

• Transfer the domain to Squarespace
• Manually add verification records to DNS settings

To manually verify a third-party domain:

1. Access DNS Records

• For nameserver-connected domains: Use Squarespace DNS Settings panel
• For DNS-connected domains: Edit records through your domain provider

2. Locate Verification Records

• Open Email Campaign settings
• Under Sender Details, click Authenticate
• Note the two required DNS records

3. Add Required DNS Records

First Record:

• Type: CNAME
• Host: squarespace._domainkey
• Data: squarespace-domainkey.squarespace-mail.com

Second Record:

• Type: TXT
• Host: _dmarc
• Data: [unique code provided in settings]

Provider-Specific Instructions:

IONOS:

• Visit my.ionos.com/domains
• Select domain → DNS
• Click Add Record
• Enter CNAME and TXT records

GoDaddy:

• Access dashboard.godaddy.com
• Navigate to Domain Settings → Manage DNS
• Add both records under DNS Records

Google Domains:

• Log in at domains.google
• Click DNS icon
• Add records under Custom resource records

Hover:

• Log in at hover.com
• Click DNS → Add Record
• Enter both records

Namecheap:

• Access namecheap.com
• Navigate to Domain List → Manage → Advanced DNS
• Add both records

Note: DNS changes may take up to 72 hours to resolve. Verification is complete when "Domain is unauthenticated" no longer appears under sender details.

Important: If your domain has a DMARC policy set to p=reject, domain verification is required before using sender details. Contact your domain provider if unsure about DMARC policies.

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