Xbase++

Count the Report Parts in a multipart/report Email

Demonstrates the read-only Chilkat Email.NumReports property, which is the number of report parts in a multipart/report email. A part is counted as a report when its Content-Type is message/* (except message/rfc822) or text/rfc822-headers. Use GetReport to retrieve the body of each report part; indexes are zero-based. This example loads a report email and prints each report part.

Background: When a message can't be delivered, the mail system usually sends back a bounce known as a Delivery Status Notification (DSN). DSNs use the multipart/report structure, which bundles several parts: a human-readable explanation, a machine-readable message/delivery-status part describing exactly what happened (recipient, status code, failing server), and often the original message's headers. Reading these report parts lets a program automatically detect and process bounces.

Chilkat Xbase++ Downloads

Download Chilkat for Xbase++

Xbase++

LOCAL nSuccess
LOCAL oEmail
LOCAL n
LOCAL i

nSuccess := 0

//  Demonstrates the read-only Email.NumReports property, which is the number of report
//  parts in a multipart/report email (for example, a Delivery Status Notification).
//  Use GetReport to retrieve the body of each report part.  Indexes are zero-based.

oEmail := CreateObject("Chilkat.Email")

//  Load a multipart/report email (such as a bounce / DSN message).
nSuccess := oEmail:LoadEml("qa_data/eml/dsn_bounce.eml")
IF (nSuccess == 0)
    ? oEmail:LastErrorText
    oEmail:destroy()
    RETURN
ENDIF

n := oEmail:NumReports
? "NumReports = " + Str(n)

FOR i := 0 TO n - 1
    ? "---- Report " + Str(i) + " ----"
    ? oEmail:GetReport(i)
NEXT

oEmail:destroy()