email.sent

The API request was successful and Resend will attempt to deliver the message to the recipient’s mail server.

email.delivered

Resend successfully delivered the email to the recipient’s mail server.

email.delivery_delayed

The email couldn’t be delivered to the recipient’s mail server because a temporary issue occurred. Delivery delays can occur, for example, when the recipient’s inbox is full, or when the receiving email server experiences a transient issue.

email.complained

The email was successfully delivered to the recipient’s mail server, but the recipient marked it as spam.

email.bounced

The recipient’s mail server permanently rejected the email.

email.opened

The recipient’s opened the email.

email.clicked

The recipient’s clicked on an email link.