Triggered when an email has been successfully delivered to the recipient’s mail server.
This indicates that the recipient’s mail server has accepted the email. Note that this doesn’t guarantee the email reached the recipient’s inbox (it could still be filtered to spam).
When it’s sent: When the recipient’s mail server confirms successful delivery.
The event type
message.delivered The webhook ID (the same ID as returned by the Create Webhook API)
When the event occurred (ISO 8601 format)
Webhook received successfully