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Add Domain to Resend

First, log in to your Resend Account and add a domain. Domain Details
It is best practice to use a subdomain (updates.example.com) instead of the root domain (example.com). Using a subdomain allows for proper reputation segmentation based on topics or purpose (e.g. marketing) and is especially important if receiving emails with Resend.

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Log in to Hetzner Console

This section covers accessing the new Hetzner Console for managing DNS records. If your domain is still using the legacy Hetzner DNS console, please skip to the Log in to Hetzner DNS Console section below. Log in to Hetzner Console:
  1. Choose your project from the Projects list.
  2. Click on the DNS link from the Networking section of the side navigation.
  3. Choose your Domain from the DNS zones list.
Domain Details

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Log in to Hetzner DNS Console

This section covers accessing the legacy Hetzner DNS Console. Hetzner recently created the new Hetzner Console for managing DNS records. If your domain is using the new Hetzner console, please go to the Log in to Hetzner Console section above then skip to the Add MX SPF Record section. Log in to Hetzner DNS Console:
  1. Choose your Domain from the Your Zones list.
  2. Select the Records tab to get to the page to manage DNS records.
Domain Details

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Add MX SPF Record

In the Add Record section on Hetzner copy and paste the values MX from Resend:
  1. For the Type field, choose MX.
  2. For the Name field, type send (or send.subdomain if you’re using a subdomain).
  3. For the Priority field, set the value to 10.
  4. For the Value field, add the MX SPF Record Content from Resend.
  5. For the TTL field, set the value to 1800.
  6. Select Add.
Hetzner requires your MX record to have a trailing period when adding. Resend will include the trailing period when copying. Removing the period will cause the verification to fail.
Domain Details Domain Details Below is a mapping of the record fields from Resend to Hetzner Console:
HetznerResendExample Value
TypeTypeMX Record
NameNamesend.subdomain
ValueContentfeedback-smtp.us-east-1.amazonses.com.
TTLTTL1800
PriorityPriority10
Do not use the same priority for multiple records. If Priority 10 is already in use on another record, try a higher value 20 or 30.

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Add TXT SPF Record

On the same Add Record section:
  1. For the Type field, choose TXT.
  2. For the Name field, type send (or send.subdomain if you’re using a subdomain).
  3. For the Value field, add the TXT SPF Record Content from Resend.
  4. For the TTL field, set the value to 1800.
  5. Select Add.
Omit your domain from the record values in Resend when you paste. Instead of send.example.com, paste only send (or send.subdomain if you’re using a subdomain).
Domain Details Domain Details Below is a mapping of the record fields from Resend to Hetzner:
HetznerResendExample Value
TypeTypeTXT Record
NameNamesend.subdomain
ValueContent"v=spf1 include:amazonses.com ~all"
TTLTTL10800

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Add TXT DKIM Records

On the same Add Record section:
  1. For the Type field, choose TXT.
  2. For the Name field, type resend._domainkey (or resend._domainkey.subdomain if you’re using a subdomain).
  3. For the Value field, add the TXT DKIM Record Content from Resend.
  4. For the TTL field, set the value to 1800.
  5. Select Add.
Omit your domain from the record values in Resend when you paste. Instead of resend._domainkey.example.com, paste only resend._domainkey (or resend._domainkey.subdomain if you’re using a subdomain).
Domain Details Domain Details Below is a mapping of the record fields from Resend to Hetzner:
HetznerResendExample Value
TypeTypeTXT Record
NameNamesend.subdomain
ValueContentp=example_domain_key_value
TTLTTL1 hour

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Receiving Emails

If you want to receive emails at your domain, toggle the “Receiving” switch on the domain details page. Enable Receiving Emails for a verified domain Domain Details
When you enable Inbound on a domain, Resend receives all emails sent to that specific domain depending on the priority of the MX record. For this reason, we strongly recommend verifying a subdomain (subdomain.example.com) instead of the root domain (example.com). Learn more about avoiding conflicts with your existing MX records.
In the Add Record section on Hetzner:
  1. For the Type field, choose MX.
  2. For the Name field, type @ for the base domain or the name of the subdomain if you’re using a subdomain.
  3. For the Priority field, set the value to 10.
  4. For the Value field, add the Receiving MX Record Content from Resend.
  5. For the TTL field, set the value to 1800.
  6. Select Add.
Below is a mapping of the record fields from Resend to Hetzner:
HetznerResendExample Value
TypeTypeMX Record
NameNamesubdomain
Mail serverContentinbound-smtp.us-east-1.amazonaws.com.
TTLTTL1800
PriorityPriority10
After verifying your domain, create a webhook to process incoming emails. For help setting up a webhook, how to access email data and attachments, forward emails, and more, see our guide on receiving emails with Resend.

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Complete Verification

Now click Verify DNS Records on your Domain in Resend. It may take a few hours to complete the verification process (often much faster).

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Troubleshooting

If your domain is not successfully verified, these are some common troubleshooting methods.
Review the records you added to Hetzner to rule out copy and paste errors.