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Create a Single Send

Creates an unscheduled draft marketing email for lists, segments or all contacts, with its content, sender and unsubscribe settings.

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Updated Sep 27, 2026Available asAPI

Description

Set `send_to` (`list_ids`, `segment_ids` or `all`) and `email_config`: the subject and HTML, or a `design_id`, the `sender_id`, and a `suppression_group_id` or `custom_unsubscribe_url`. A `send_at` here only prefills the date; schedule the Single Send to send it.

create-single-send.md

Create a Single Send

Creates an unscheduled draft marketing email for lists, segments or all contacts, with its content, sender and unsubscribe settings.

Set send_to (list_ids, segment_ids or all) and email_config: the subject and HTML, or a design_id, the sender_id, and a suppression_group_id or custom_unsubscribe_url. A send_at here only prefills the date; schedule the Single Send to send it.

Set up

Use the first option your agent supports.

API (official)

Before doing anything else, make one read-only call to confirm access.

Rules

  • Ask the user before anything that sends messages, costs money, or changes data.
  • Never print API keys.

Built from these files in the repository

The layout and the rules come from lib/catalog/render-markdown.ts, the set-up wording from lib/catalog/render-access.ts.

Ways in

RouteSourceCallRequiredDocs
APIOfficialPOST /v3/marketing/singlesendsAPI key in $SENDGRID_API_KEYDocs

Workflows using Create a Single Send

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