resend.email.send

Send a transactional email via Resend

Send a transactional email via the Resend API.

Inputs:

• from_address: Verified sender address (required), e.g. hello@example.com.
• to_addresses: List of recipient email addresses (required).
• subject: Email subject line (required).
• html: HTML email body (optional but recommended).
• text: Plain-text email body (optional).
• reply_to: Reply-to address (optional).
• cc: List of CC addresses (optional).
• bcc: List of BCC addresses (optional).

Outputs (terminal state_data):

• email_id: str — Resend email ID

Plugin required: context.get_plugin("resend") must expose .api_key.

Overview

Property	Value
Workflow type	Atomic
Library	App-resend
Version	1.0

Input Schema

Field	Type	Required	Default	Description
from_address	string	Yes	—	Verified sender address
to_addresses	json	Yes	—	List of recipient addresses
subject	string	Yes	—	Email subject
html	string	No	—	HTML body
text	string	No	—	Plain-text body
reply_to	string	No	—	Reply-to address
cc	json	No	—	List of CC addresses
bcc	json	No	—	List of BCC addresses

Output Schema

Field	Type	Required	Default	Description
from_address	string	No	—	—
to_addresses	json	No	—	—
subject	string	No	—	—
html	string	No	—	—
text	string	No	—	—
reply_to	string	No	—	—
cc	json	No	—	—
bcc	json	No	—	—
email_id	string	No	—	—
failure_reason	string	No	—	—
failure_type	string	No	—	—
failed_action	string	No	—	—
failed_at_state	string	No	—	—
failed_step	string	No	—	—
failed_layer	string	No	—	—
error	string	No	—	—
error_type	string	No	—	—

States

State	Initial	Terminal	Success	Auto-advance	Description
pending	Yes	No	—	execute	—
completed	No	Yes	Yes	—	—
failed	No	Yes	No	—	—

State Diagram

Transitions

From	Action	To	Description
pending	execute	completed	—
* (any state)	fail	failed	—

API Usage

POST /api/workflows/start
Content-Type: application/json

{
  "workflow_type": "resend.email.send",
  "initial_data": {
    "from_address": "value",
    "to_addresses": "value",
    "subject": "value"
  }
}