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The Resend tool for Superface allows you to quickly add the following capabilities:

  • Send an email with optional cc, bcc, and replyTo inputs.


You will need an Resend account and a API key with sending access permission.


From your Resend dashboard, click on API Keys, then the Create API Key button.

The API Keys page in Resend

In the popup:

  • Set a name for your API Key.
  • Set the Permission to Sending access.
  • Select a specific sending domain if you have one, otherwise use All Domains.

Image of the pop up modal with the fields you need to fill out for the API Key

Click on Add to create the new API key.

For security reasons Resend will only show you the API key once, so you must copy it immediately. You will not be able to access this key later.

Next, in Superface, click on the Config button for the Resend tool and paste your Resend API Key into the Token field in the Security section.

The config in Superface with the Token field

Click on Save Changes to update the tool with the new configuration.

Import your schema

Remember to re-import the schema in your GPT to update it with the new capabilities added by this tool.

Example prompts

To test that everything is working as it should be, from your GPT or the Superface Agent you can try asking:

  • Send an email from <email-address> to <email-address> with the subject "Hello, World!" and the message "Live and direct from Superface".