Send Email

The Send Email step sends one email each time it runs. It sends through an email connection; today that is a Resend connection, which sends from a domain you have verified with Resend.

Add the step

1. Connect Resend once on the Connections page.
2. In the workflow editor, press + and pick Send Email (under Email).
3. Open the step and choose the Connection to send with. The first one is already selected; with several connections, pick the one whose domain you want to send from.
4. Fill in the email, then Save.

Without a Resend connection the step can still be added, but its form asks you to connect one first. If the chosen connection is later disconnected, the form says so; pick another connection and save. The fields you filled in are kept.

Fields

Every field accepts {{ <stepId>.<path> }} expressions, like other steps.

Field	Notes
Connection	required; one of your Resend connections
From	required; an address on a domain verified in Resend. Alur <hi@yourdomain.com> sets a sender name
To	required; up to 50 addresses, one per line or separated by commas
Subject	required
HTML body	the email as HTML
Plain-text body	the email as plain text
Cc, Bcc, Reply-to	optional; one or more addresses

Fill in the HTML body, the plain-text body, or both. A step with neither fails before anything is sent.

Every address in To receives the same email and can see the other recipients. To send one email per person, put the step inside a For each.

Output and failures

On success the step's output has status, ok and body (Resend's response), like API Call. {{ step1.body.id }} is the email's ID in Resend.

Unlike API Call, a rejected request fails the step: an invalid key, an unverified sending domain, an invalid address or a used-up daily or monthly quota makes the step fail with Resend's message, and the run shows it. Temporary problems (Resend timing out, the per-second rate limit, server errors) are retried automatically.

Each send carries an idempotency key derived from the run and step, so a retried step doesn't send the same email twice. A new run sends again.