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Reply to an email

Sends a reply to an email in an Instantly inbox from one of the workspace's connected sending accounts.

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Updated Sep 27, 2026Available asAPI

Description

Pass `reply_to_uuid` (the `id` of the email, from the email endpoints), the sending account as `eaccount`, a `subject`, and a `body` with `html`, `text` or both. It only replies to an existing email; it can't start a new thread. This sends a real email, so confirm the text first.

reply-to-email.md

Reply to an email

Sends a reply to an email in an Instantly inbox from one of the workspace's connected sending accounts.

Pass reply_to_uuid (the id of the email, from the email endpoints), the sending account as eaccount, a subject, and a body with html, text or both. It only replies to an existing email; it can't start a new thread. This sends a real email, so confirm the text first.

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 /api/v2/emails/replyAPI key in $INSTANTLY_API_KEYDocs

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