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Schedule a message

Send later with <code>send_at</code>, in the recipient’s time zone or yours.

2 min read v3

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Send later with send_at, in the recipient’s time zone or yours. Here is exactly what to do.

Steps#

  1. Set send_at#

    Pass an ISO 8601 time, for example 2026-11-02T09:00:00-06:00.

  2. Respect quiet hours#

    Add quiet_hours: true to hold messages between 9 p.m. and 8 a.m. local time.

  3. Cancel if needed#

    DELETE /v3/messages/{id} works until the send time.

Tip

Scheduled messages can be up to 30 days ahead.

Still stuck?#

Include the request ID from the Relay-Request-Id response header — it lets us find your call in seconds.

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