Chilkat2-Python

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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import sys
import chilkat2

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.

email = chilkat2.Email()

success = email.LoadEml("qa_data/eml/dsn_bounce.eml")
if (success == False):
    print(email.LastErrorText)
    sys.exit()

# Read individual fields from the message/delivery-status part.
print("Action: " + email.GetDeliveryStatusInfo("Action"))
print("Status: " + email.GetDeliveryStatusInfo("Status"))
print("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.