Deadsimple Email Webhooks

generated: '2026-11-05'
method: searched
generator: extract-docs-artifacts.py (local)
source: https://deadsimple.email/blog/webhooks-for-ai-email.html
sources:
- https://deadsimple.email/blog/webhooks-for-ai-email.html
- https://deadsimple.email/calendar.html
description: Dead Simple Email provides a webhook system that fires events for email lifecycle actions and calendar changes.
events:
- event: message.received
  description: A new email arrived in one of your inboxes.
- event: message.sent
  description: An outgoing email was successfully accepted for delivery.
- event: message.delivered
  description: Delivery confirmed by the receiving mail server.
- event: message.bounced
  description: An email couldn't be delivered.
- event: message.complained
  description: A recipient marked your email as spam.
- event: message.rejected
  description: An inbound message was blocked by your allowlist/blocklist filters.
- event: message.opened
  description: A recipient opened your email via a tracking pixel.
- event: message.link_clicked
  description: A recipient clicked a link in your email.
- event: inbox.created
  description: A new inbox was provisioned.
- event: inbox.deleted
  description: An inbox was deleted.
- event: domain.verified
  description: A custom domain passed DNS verification and is ready to use.
- event: calendar.event.created
  description: An event on an inbox's calendar was created.
- event: calendar.event.updated
  description: An event on an inbox's calendar was changed.
- event: calendar.event.cancelled
  description: An event on an inbox's calendar was cancelled.
delivery:
  signature: HMAC-SHA256
  retries: exponential backoff
  content_type: application/json
note: Every delivery carries X-DSE-Webhook-Timestamp and X-DSE-Webhook-Signature (sha256=<hex>) headers, and also an X-DSE-Signature header (t=<timestamp>,v1=<hex>).
  Retries use exponential backoff at 10 seconds, 30 seconds, 1 minute, 5 minutes, 30 minutes, then hourly for up to 24 hours.
docs: https://deadsimple.email/blog/webhooks-for-ai-email.html