Set up Resend DNS on Netlify
This guide shows how to configure DNS records for Resend on Netlify, including SPF, DKIM, DMARC and domain verification records. The fastest way to do this is with the mail2dns CLI, which automatically creates all required records for your domain in seconds.
Setup
If needed, install mail2dns before following the below steps:
npm i -g mail2dnsRun the following command and answer the prompts to create DNS records at Netlify:
mail2dns setup [YOUR_DOMAIN] resend netlifyYou will be prompted to input the following values:
-
DKIM CNAME value
In the Resend dashboard, go to Domains, add your domain, and copy the value for the 'resend._domainkey' CNAME record.
-
Netlify personal access token
Create a token at https://app.netlify.com/user/applications#personal-access-tokens
Set the following environment variables:
RESEND_DKIM=
NETLIFY_AUTH_TOKEN=Then run the following command to create DNS records at Netlify:
mails2dns setup [YOUR_DOMAIN] resend netlifyEnvironment Variables Reference
-
RESEND_DKIM
DKIM CNAME value. In the Resend dashboard, go to Domains, add your domain, and copy the value for the 'resend._domainkey' CNAME record.
-
NETLIFY_AUTH_TOKEN
Netlify personal access token. Create a token at https://app.netlify.com/user/applications#personal-access-tokens
Run the following command, supplying the required options, to create DNS records at Netlify:
mails2dns setup [YOUR_DOMAIN] resend netlify --dkim [RESEND_DKIM] --token [NETLIFY_AUTH_TOKEN] Options Reference
-
--dkim
DKIM CNAME value. In the Resend dashboard, go to Domains, add your domain, and copy the value for the 'resend._domainkey' CNAME record.
-
--token
Netlify personal access token. Create a token at https://app.netlify.com/user/applications#personal-access-tokens
Passing credentials via flags is not recommended. See protecting secrets.
That's it! After running the setup command, the required DNS records will be created for your domain at Netlify to work with Resend.
Optional Flags
-o --no-mx Skip MX records (set up DNS for outbound email only) -y --yes Skip confirmation prompts (the command will error if any required inputs are missing) --allow-insecure-flags Allow secrets to be passed via command-line flags (not recommended) -d --dry-run Show records that would be created without applying them DNS records required for Resend
Resend requires the following DNS records to send email from your domain. These are created automatically by the mail2dns setup command:
TXT Record
@ → v=spf1 include:spf.resend.com ~all
TXT Record
_dmarc → v=DMARC1; p=none;
CNAME Record
resend._domainkey → {DKIM}
Protecting Secrets
When running the mail2dns setup command, if you provide credentials via flags these will be visible in your shell history and process list.
To avoid this, you can provide credentials via environment variables or interactively. If you understand the risks and still want to provide credentials via flags, you should take steps to ensure that the input is not saved in shell history, and avoid running it on a shared or public machine.
By default, the setup command will error if you provide secrets via flags: to enable them you must opt in by passing the --allow-insecure-flags option, or setting M2D_ALLOW_INSECURE_FLAGS=true environment variable.
Non-interactive mode
You may wish to run the mail2dns setup command without any confirmation prompts (by default, mail2dns asks you to confirm the DNS records it creates before applying them). To do this, use the ‑‑yes or ‑y flag with the setup command. Be sure to review the DNS records that will be created before running the command with this flag, as it will apply all changes without confirmation.
Any mix of flags and environment variables may be used to provide the required values. By default any missing values will be prompted for, or in non-interactive mode the command will produce an error if there are missing required values.
Related Setups
For Resend
- Set up Resend DNS on Cloudflare +
- Set up Resend DNS on Amazon Route 53 +
- Set up Resend DNS on Google Cloud +
- Set up Resend DNS on Vercel +
- Set up Resend DNS on Azure DNS +
- Set up Resend DNS on DigitalOcean +
- Set up Resend DNS on GoDaddy +
- Set up Resend DNS on Hetzner +
