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Resend is an email API for transactional email delivery. Cargo’s native Resend integration lets you send template-based or raw HTML/text emails directly from your Tools, Plays, and Agents.

How to set up Resend

To connect Resend, you need an API key from your Resend account.

Connection details

Create an API key in Resend under API Keys and paste it into Cargo when creating the connector.
Once the connector is created, you can:
  • Use Resend in workflows — Choose Resend from the node catalog in a Play, Tool, or Agent.

Resend actions

Send email

Send an email with Resend using either:
  • a published template with variables, or
  • raw HTML/text content.
Configuration
If Template is provided, do not send HTML or Text in the same action. Resend rejects that payload combination.

Template variables

When using templates, pass variables as key-value pairs in Template variables.

Example

Template variable keys must match the variables expected by your published Resend template.