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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 Porkbun

Log in to your Porkbun account:
  1. Select the DNS option under your domain to manage DNS records.
Domain Details

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Add MX SPF Record

In the DNS section on Porkbun copy and paste the values MX from Resend:
  1. On the Type page, choose MX.
  2. Type send for the Host of the record.
  3. Copy the MX Value from Resend into the Answer / Value field.
  4. Use the default TTL of 600.
  5. In the Priority field enter 10.
  6. Select Add.
Domain Details Domain Details Below is a mapping of the record fields from Resend to Porkbun:
PorkbunResendExample Value
TypeTypeMX Record
HostNamesend
Answer / ValueValuefeedback-smtp.us-east-1.amazonses.com
TTLTTL600
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 section:
  1. On the Type page, choose TXT.
  2. Type send for the Host of the record.
  3. Copy the TXT Value Resend into the Answer / Value field.
  4. Use the default TTL of 600.
  5. Select Add Record.
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 Porkbun:
PorkbunResendExample Value
TypeTypeTXT Record
HostNamesend
Answer / ValueValue"v=spf1 include:amazonses.com ~all"
TTLTTL600

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Add TXT DKIM Records

On the same Create Record section:
  1. On the Type page, choose TXT.
  2. Type resend._domainkey for the Host of the record.
  3. Copy the TXT Value Resend into the Answer / Value field.
  4. Use the default TTL of 600.
  5. Select Add Record.
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 Porkbun:
PorkbunResendExample Value
TypeTypeTXT Record
HostNamesend
Answer / ValueValuep=example_demain_key_value
TTLTTL600

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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
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 DNS section on Porkbun:
  1. On the Type page, choose MX.
  2. Type inbound (or whatever your subdomain is) for the Host of the record.
  3. Copy the MX Value from Resend into the Answer / Value field.
  4. Use the default TTL of 600.
  5. In the Priority field enter 10.
  6. Select Add.
Below is a mapping of the record fields from Resend to Porkbun:
PorkbunResendExample Value
TypeTypeMX Record
HostNameinbound
Answer / ValueContentinbound-smtp.us-east-1.amazonaws.com
TTLTTL600
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 Porkbun to rule out copy and paste errors.