Reply to an email

Reply to an email

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

Note: Sends a real email: confirm the text first. It only replies to an existing email, whose id goes in reply_to_uuid; it can't start a new thread.

Set up

Use the first option your agent supports.

API (official)

• Base URL: https://api.instantly.ai
• Endpoint: POST /api/v2/emails/reply
• Auth: send the header Authorization: Bearer $INSTANTLY_API_KEY
• Get a key: https://app.instantly.ai/app/settings/integrations
• Docs: https://developer.instantly.ai/getting-started/authorization

Before anything else, confirm access with the cheapest read-only call, like a list or a search. Never send or change anything to test access.

Rules

• Ask the user before anything that sends messages, costs money, or changes data, and say how many records it touches. One approval covers a batch the user has seen.
• Never print API keys.