Node.js

Read Delivery-Status Fields from a Bounce

See more Email Object Examples

Demonstrates the Chilkat Email.GetDeliveryStatusInfo method, which returns a named field from the message/delivery-status part of a delivery-status notification (DSN). It should be called only for an email identified as a delivery-status notification. This example loads a bounce message and reads its Action, Status, and Final-Recipient fields.

Background: When a message can't be delivered, the mail system returns a bounce as a multipart/report whose message/delivery-status part carries machine-readable fields: Action (e.g. failed), Status (a numeric code like 5.1.1 meaning "no such mailbox"), and Final-Recipient (the address that failed). Parsing these lets a program automatically detect hard bounces and prune bad addresses from a mailing list.

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Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    //  Demonstrates the GetDeliveryStatusInfo method, which returns a field from the
    //  message/delivery-status part of a delivery-status notification (DSN / bounce).
    //  Call it only for an email that is a delivery-status notification.

    var email = new chilkat.Email();

    success = email.LoadEml("qa_data/eml/dsn_bounce.eml");
    if (success == false) {
        console.log(email.LastErrorText);
        return true;
    }

    //  Read individual fields from the message/delivery-status part.
    console.log("Action: " + email.GetDeliveryStatusInfo("Action"));
    console.log("Status: " + email.GetDeliveryStatusInfo("Status"));
    console.log("Final-Recipient: " + email.GetDeliveryStatusInfo("Final-Recipient"));

    //  Note: The path "qa_data/..." is a relative local filesystem path,
    //  relative to the current working directory of the running application.

}

chilkatExample();