---
title: "Email Sent"
method: POST
path: "MessageSent"
tags: ["Email Events"]
---

# Email Sent

`POST MessageSent` (webhook)

Triggered when an email is successfully delivered to the recipient's mail server.

This event indicates the email was accepted by the receiving server, but does not
guarantee inbox placement (the recipient's server may still filter it to spam).

## Payload

- WebhookPayload — Webhook event payload sent to your configured endpoint
  - `event` 'MessageSent' | 'MessageDelayed' | 'MessageDeliveryFailed' | 'MessageBounced' | 'MessageHeld' | 'MessageLoaded' | 'MessageLinkClicked' | 'DomainDNSError', required — The type of event that occurred
  - `timestamp` integer, required — Unix timestamp when the event occurred
  - `payload` WebhookEventData, required — Event-specific data
    - `message` WebhookMessageData — Email message information
      - `id` string — Internal message ID
      - `token` string — Message token for identification
      - `to` string, email — Recipient email address
      - `from` string, email — Sender email address
      - `subject` string — Email subject line
      - `tag` string — Tag applied to the email
      - `message_id` string — RFC 5322 Message-ID header
      - `metadata` object — Custom metadata attached when the email was sent. Use this to correlate webhook events with your internal systems.
    - `status` string — Status from the mail server
    - `details` string — Additional details or error message
    - `output` string — Raw server output
    - `url` string — Clicked URL (for MessageLinkClicked events)
    - `ip_address` string — IP address of recipient (for open/click events)
    - `user_agent` string — User agent of recipient (for open/click events)

## Acknowledgement `200`

Webhook received successfully

---

[API](https://skmtc.dev/arkhq-io/apis/ark-email-api.md) · [All operations](https://skmtc.dev/arkhq-io/apis/ark-email-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/arkhq-io/ark-email-api/revisions/dfe78a4bb565/schema)