Web Domains

Web domains allow you to serve your capture pages on a custom domain (e.g., pages.yourdomain.com or subscribe.yourdomain.com) instead of the default Lumail.io subdomain.

Why Use a Custom Web Domain?

• Brand Consistency: Your capture pages appear on your own domain
• Trust: Visitors see your domain in the URL bar
• SEO Benefits: Build domain authority on your own domain
• Professional Appearance: Remove third-party branding from URLs

Adding a Web Domain

1. Go to Domains in your organization settings
2. Click Add Web Domain
3. Enter your subdomain (e.g., pages.yourdomain.com)
4. Click Create

DNS Configuration

After adding your domain, configure a CNAME record at your domain registrar:

Type	Host	Value	TTL
CNAME	pages (or your subdomain)	[unique-value].vercel-dns.com	3600

The exact CNAME value will be shown on the domain detail page. It looks like:

e5297cfd116d5b1f.vercel-dns-016.com

Verification Process

1. Add the CNAME record at your DNS provider
2. Return to Lumail.io and click Check DNS Records Status
3. The system will poll for DNS changes (up to 30 seconds)
4. Once detected, your domain status changes to Verified

Using Your Web Domain

Once verified, your capture pages are automatically available at your custom domain:

• Before: lumail.io/p/your-org/page-slug
• After: pages.yourdomain.com/page-slug

All existing capture page links continue to work. The custom domain is an additional way to access your pages.

Apex Domains vs Subdomains

Subdomains (Recommended)

Use a subdomain like pages.yourdomain.com or subscribe.yourdomain.com:

Type	Host	Value
CNAME	pages	[value].vercel-dns.com

Apex Domains

For apex domains (e.g., yourdomain.com without a subdomain), use an A record:

Type	Host	Value
A	@	76.76.21.21

Note: Not all DNS providers support CNAME flattening for apex domains. Subdomains are recommended.

Troubleshooting

Domain stuck on "Pending"

• Check CNAME: Verify the CNAME record is correctly configured
• DNS Propagation: Wait up to 48 hours for DNS changes to propagate
• Use dig: Run dig pages.yourdomain.com to check if the record exists

SSL Certificate Issues

SSL certificates are automatically provisioned when your domain is verified. If you see certificate warnings:

• Wait 5-10 minutes after verification for certificate provisioning
• Clear your browser cache and try again
• Check that the domain points correctly to Vercel

Domain shows "Misconfigured"

This means the DNS is not pointing to the correct value. Double-check:

1. The CNAME value matches exactly what's shown in Lumail.io
2. There are no conflicting A records for the same subdomain
3. The record has had time to propagate

Related Documentation

• V0 Capture Page Tutorial - Build capture pages to host on your domain
• Create Subscriber API - Capture page form integration