Xbase++

Get Delivery-Status Info as JSON

Demonstrates the Chilkat Email.GetDsnInfo method, which — when IsMultipartReport indicates the email is a multipart/report — obtains the delivery-status information as a JsonObject. This example loads a bounce message, confirms it is a report, and prints the extracted DSN details as JSON.

Background: A bounce (DSN) carries its key facts — which recipient failed, the status code, the reporting server — in a machine-readable message/delivery-status part. Rather than parsing those raw fields yourself, GetDsnInfo gathers them into a structured JSON document you can query with the JsonObject API, making it easy to automate bounce handling and prune failed addresses from a mailing list.

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LOCAL nSuccess
LOCAL oEmail
LOCAL oJson

nSuccess := 0

//  Demonstrates the GetDsnInfo method, which, for a multipart/report email, obtains the
//  delivery-status information as a JSON object.

oEmail := CreateObject("Chilkat.Email")

nSuccess := oEmail:LoadEml("qa_data/eml/dsn_bounce.eml")
IF (nSuccess == 0)
    ? oEmail:LastErrorText
    oEmail:destroy()
    RETURN
ENDIF

//  Only meaningful for a multipart/report email.
IF (oEmail:IsMultipartReport() == 1)
    oJson := CreateObject("Chilkat.JsonObject")
    nSuccess := oEmail:GetDsnInfo(oJson)
    IF (nSuccess == 1)
        ? oJson:Emit()
    ENDIF

ELSE
    ? "This email is not a multipart/report."
ENDIF

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

oEmail:destroy()
oJson:destroy()