Email Domains
Configure your own domain for sending emails
Email domains allow you to send emails from your own domain (e.g., newsletter@yourdomain.com) instead of a shared domain. This improves deliverability, builds trust, and strengthens your brand.
Why Use a Custom Email Domain?
- Better Deliverability: Emails from your own domain are less likely to be marked as spam
- Brand Recognition: Recipients see your domain, not a generic one
- Professional Appearance: Build trust with a consistent brand experience
- Domain Reputation: Build your own sender reputation over time
Adding an Email Domain
- Go to Domains in your organization settings
- Click Add Email Domain
- Enter your domain name (e.g.,
yourdomain.com) - Click Create
DNS Configuration
After adding your domain, you'll need to configure DNS records at your domain registrar. Lumail.io requires the following records:
SPF Record
SPF (Sender Policy Framework) authorizes Lumail.io to send emails on behalf of your domain.
| Type | Host | Value |
|---|---|---|
| TXT | @ | v=spf1 include:amazonses.com ~all |
DKIM Records
DKIM (DomainKeys Identified Mail) signs your emails to verify they haven't been tampered with.
You'll receive 3 CNAME records to add:
| Type | Host | Value |
|---|---|---|
| CNAME | [key1]._domainkey | [value1].dkim.amazonses.com |
| CNAME | [key2]._domainkey | [value2].dkim.amazonses.com |
| CNAME | [key3]._domainkey | [value3].dkim.amazonses.com |
DMARC Record (Recommended)
DMARC tells receiving servers what to do with emails that fail SPF or DKIM checks.
| Type | Host | Value |
|---|---|---|
| TXT | _dmarc | v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com |
Verification
After adding DNS records:
- Return to the domain detail page
- Click Check Verification Status
- Wait for DNS propagation (can take up to 48 hours)
Once verified, the domain status will change from Pending to Verified.
Troubleshooting
Domain stuck on "Pending"
- DNS Propagation: DNS changes can take up to 48 hours to propagate globally
- Check Records: Use a tool like MXToolbox to verify your DNS records
- TTL Settings: Lower TTL values speed up propagation
Emails going to spam
- Ensure all DNS records (SPF, DKIM, DMARC) are properly configured
- Start with a small sending volume and gradually increase
- Maintain good list hygiene (remove bounces and unsubscribes)
Related Documentation
- Send Email API - Requires verified domain for
fromaddress - Deliverability Score - Monitor sender reputation
- Content Deliverability - Optimize emails for inbox placement