Email address and domain verification are essential steps before sending your first email campaign. Here's how to properly set up your sender details:

Before You Begin:

• Use a custom email domain (e.g., from Google Workspace) instead of free email services
• Ensure accurate information to comply with legal requirements like CAN-SPAM Act
• You can create up to 10 sender details but use only one at a time

Step 1: Create Sender Details

1. Navigate to Email Campaign Settings
2. Click "Sender Details" then "Add Sender"
3. Enter sender name (visible to recipients)
4. Add your email address (preferably custom domain)
5. Click Next

Step 2: Verify Email Address

1. Check your inbox for verification email
2. Copy and enter verification code
3. Click Next (or Skip to verify later)

Step 3: Verify Domain

• Squarespace domains: Automatically verified
• Third-party domains: Require manual verification
• DMARC policy p=reject: Must verify domain before using sender details

Best Practices for Domain Setup:

1. Register domain through Squarespace
2. Set up custom email with Google Workspace
3. Create and verify sender details

Free Email Service Limitations:

• Not recommended due to strict authentication measures
• Some providers (aol.com, yahoo.com, icloud.com) are unsupported
• Squarespace generates custom "From:" address for Gmail users

Managing Sender Details:

• Edit: You can modify the sender name only
• Delete: Remove unwanted sender details through Email Campaign Settings
• New email addresses require new sender details and verification

Remember: The postal address shown at the bottom of campaigns is set separately when sending your campaign.

For optimal delivery rates and professional appearance, always use a custom domain email address rather than free email services.

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