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Documentation Index

Fetch the complete documentation index at: https://docs.tuco.ai/llms.txt

Use this file to discover all available pages before exploring further.

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Email Bridge

Send iMessages to any phone number by composing an email. Works from Gmail, Outlook, or any email client.

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How It Works

  1. Compose an email in your email client
  2. Set To to: +19042956129@send.tuco.ai
  3. Write your message in the email body
  4. Hit Send
  5. Tuco sends it as an iMessage and emails you a confirmation

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Email Format

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Basic (uses first available line)

To: +19042956129@send.tuco.ai
Subject: (anything — ignored)
Body: Hey, wanted to follow up on our conversation yesterday.

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Specific line

To: +19042956129-line_abc123@send.tuco.ai
Find your line ID on the Lines page in the dashboard.

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Requirements

  • Your email address (From) must be registered in Tuco
  • Your workspace must have at least one active iMessage line
  • Phone number must be in E.164 format (+ country code + number)

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Error Handling

If something goes wrong, you receive a bounce email:
ErrorCause
Invalid phone numberCheck format: +19042956129
Not authorizedYour email isn’t registered in Tuco
No active linesSet up a line at Lines → Purchase
Send failedRecipient may not have iMessage

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Security

The Email Bridge verifies your identity by looking up your sender email in Tuco’s user database. SPF/DKIM from your email provider is a secondary check — not the primary auth mechanism.
Unauthorized emails receive a bounce explaining they need to register at app.tuco.ai first.