Lua

Get a Report Part from a multipart/report Email

Demonstrates the Chilkat Email.GetReport method, which returns the body content of the Nth report within a multipart/report email. The NumReports property gives the count, and indexes are zero-based. This example loads a report email and prints each report part.

Background: A multipart/report message — used for bounces (DSNs) and read receipts (MDNs) — bundles machine-readable report parts alongside the human-readable explanation. GetReport returns the raw content of one such part so a program can parse it, for example to extract the failing recipient and status code from a bounce. Use GetDeliveryStatusInfo for direct field-level access to the delivery-status part.

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Lua

local chilkat = require("chilkat")

-- Demonstrates the GetReport method, which returns the body content of the Nth report
-- within a multipart/report email.  The NumReports property gives the number of reports;
-- indexes are zero-based.

local email = chilkat.Email.new()

local success = email:load_eml("qa_data/eml/dsn_bounce.eml")
if not success then
    print(email.last_error_text)
    return
end

local n = email.num_reports
print("NumReports = " .. n)

for i = 0, n - 1 do
    print("---- Report " .. i .. " ----")
    print(email:get_report(i))
end

-- A report returned by GetReport is the body of a report part -- for a bounce (DSN),
-- that is the machine-readable message/delivery-status part.  It looks similar to:
--
--   Reporting-MTA: dns; mail.example.com
--   Received-From-MTA: dns; sender.example.com
--   Arrival-Date: Fri, 10 Jul 2026 20:15:30 +0000
--
--   Final-Recipient: rfc822; nonexistent@example.com
--   Action: failed
--   Status: 5.1.1
--   Diagnostic-Code: smtp; 550 5.1.1 <nonexistent@example.com> User unknown

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