Send an email from your publication to a list of recipient addresses.

Eligibility:

• Publications must be approved by Paragraph before they can send custom emails. Ineligible publications receive a 403. Eligibility is managed by Paragraph and is not user-configurable.

Per-recipient filtering:

• Malformed addresses and known disposable domains are skipped.
• Addresses that previously unsubscribed from this publication are skipped as suppressed.
• Skipped recipients are returned in the response; nothing else is delivered to them.

Delivery:

• body is treated as Markdown and rendered to HTML server-side.
• Each recipient receives the email individually (not as a BCC blast) with a mandatory unsubscribe footer.
• Sends are queued asynchronously; a 200 response means recipients were accepted, not delivered.

Caps:

• Maximum of 10,000 addresses per call (request-level sanity check).