Rust
Rust
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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// 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.
let email = chilkat::Email::new();
email.set_subject("Please confirm receipt");
email.set_body("Kindly confirm you received this message.");
email.set_from("alice@example.com");
let _ = email.add_to("Bob", "bob@example.com");
// Request a return receipt.
email.set_return_receipt(true);
println!("ReturnReceipt = {}", email.return_receipt());