Tcl

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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Tcl


load ./chilkat.dll

set success 0

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

set email [new_CkEmail]

set success [CkEmail_LoadEml $email "qa_data/eml/dsn_bounce.eml"]
if {$success == 0} then {
    puts [CkEmail_lastErrorText $email]
    delete_CkEmail $email
    exit
}

#  Only meaningful for a multipart/report email.
if {[CkEmail_IsMultipartReport $email] == 1} then {
    set json [new_CkJsonObject]

    set success [CkEmail_GetDsnInfo $email $json]
    if {$success == 1} then {
        puts [CkJsonObject_emit $json]
    }

} else {
    puts "This email is not a multipart/report."
}

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

delete_CkEmail $email
delete_CkJsonObject $json