Triggered when a recipient opens an email (tracking pixel loaded).
Requirements:
Note: Some email clients pre-fetch images or block tracking pixels, so open rates may not be 100% accurate.
Use your API key from arkhq.io/org/credentials
Authorization: Bearer YOUR_API_KEYWebhook event payload sent to your configured endpoint
The type of event that occurred
MessageSent, MessageDelayed, MessageDeliveryFailed, MessageBounced, MessageHeld, MessageLoaded, MessageLinkClicked, DomainDNSError "MessageSent"
Unix timestamp when the event occurred
1704672000
Event-specific data
Webhook received successfully