Skip to main content

Add your sending domain

Add a domain, publish its DNS records and get it verified.

Use a sending subdomain

Start with a subdomain such as mail.example.com, especially if your main domain already handles business email or uses another email provider. See Subdomain vs root domain.

1. Add your domain​

  1. In your workspace, open Sending Domains and click Add domain.
  2. Enter the domain you want to send from, such as mail.example.com.
  3. Choose your Traffic type. For this first transactional email, keep Transactional selected.
  4. Leave Sending pool set to Shared.
  5. Click Add domain.

You'll land on the domain's detail page with the DNS Records tab open.

2. Add the DNS records​

Add these records at your DNS provider using the values in SendMero's DNS Records tab.

RecordWhat it doesWhat to add or update
DKIM · RequiredSigns your emails.Add the TXT record under Domain authentication.
SPF · RequiredAuthorizes your sending servers.Add or update SPF under Sender authorization.
DMARC · RecommendedSets how failed authentication is handled.Follow the instructions under Domain protection.

Learn more about DNS records →

Click Verify domain first to check existing records. Then follow the instructions shown, set TTL to Auto or your provider's default, and save your DNS changes. Update existing SPF or DMARC policies rather than adding duplicates.

Need help with your provider? See DNS provider guides.

3. Verify your domain​

  1. Return to the domain page in SendMero.
  2. Click Verify domain, or Restart verification if the previous check failed.
  3. Wait for the check to finish.

When both required records, DKIM and SPF, show DNS verified, the domain status also shows DNS verified. DMARC is recommended and does not block this verification.

If your records haven't verified yet, see Domain not verifying.

Best practices
  • Use separate subdomains for transactional and marketing email, such as mail.example.com and news.example.com.
  • Keep DNS records used by your existing email provider. Follow SendMero's instructions when updating SPF or DMARC.