Lua
Lua
Request a Return Receipt for an Email
See more Email Object Examples
Demonstrates the Chilkat Email.ReturnReceipt property. Set it to true to request a return-receipt when the message is received; this causes a Disposition-Notification-To header to be added when the email is sent. The default is false. This example enables the request.
Background: A return receipt (technically a Message Disposition Notification, MDN) asks the recipient's mail client to send back a small confirmation when the message is opened. It is only a request: the receiving client or server is free to ignore it, and many prompt the user before sending anything. Because of this, a return receipt is not reliable proof that a human actually read the message — treat it as a courtesy signal, not a guarantee.
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local chilkat = require("chilkat")
-- Demonstrates the Email.ReturnReceipt property. Set to true to request a
-- return-receipt when the email is received. This causes a Disposition-Notification-To
-- header to be added when the email is sent. The default is false.
local email = chilkat.Email.new()
email.subject = "Please confirm receipt"
email.body = "Kindly confirm you received this message."
email.from = "alice@example.com"
email:add_to("Bob", "bob@example.com")
-- Request a return receipt.
email.return_receipt = true
print("ReturnReceipt = " .. tostring(email.return_receipt))