Rust

Delete a POP3 Message via an Email Object

Demonstrates the Chilkat MailMan.DeleteEmail method, which deletes a POP3 message using the UIDL stored in the X-UIDL header of an Email object. The email must contain an X-UIDL header, which it does after being fetched from the server. This example fetches a message and then deletes it.

Background: When Chilkat downloads a POP3 message it records the server UIDL in an X-UIDL header on the Email object. DeleteEmail uses that header to tell the server which message to remove — a natural "process then delete" flow: fetch a message, act on it, then delete it. As always in POP3, the deletion is only committed when the session ends (unless ImmediateDelete is set).

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// Demonstrates the MailMan.DeleteEmail method, which deletes a POP3 message using the UIDL
// stored in the X-UIDL header of an Email object.  The email must contain an X-UIDL header
// (as it does after being fetched from the server).

let mailman = chilkat::MailMan::new();

// Configure the POP3 server connection.
mailman.set_mail_host("pop.example.com");
mailman.set_mail_port(995);
mailman.set_pop_ssl(true);
mailman.set_pop_username("user@example.com");
mailman.set_pop_password("myPassword");

// Fetch a message (headers are enough; the X-UIDL header identifies it on the server).
let email = chilkat::Email::new();

if mailman.fetch_one(true, 0, 1, &email).is_err() {
    println!("{}", mailman.last_error_text());
    return;
}

// Delete that message using its X-UIDL header.
if mailman.delete_email(&email).is_err() {
    println!("{}", mailman.last_error_text());
    return;
}

// Unless the ImmediateDelete property is set to true, the message is only marked for
// deletion.  End the POP3 session (which sends the QUIT command) to commit the deletion.
if mailman.pop3_end_session().is_err() {
    println!("{}", mailman.last_error_text());
    return;
}

println!("Deleted the email from the POP3 server.");

// Note: Explicitly connecting/authenticating is optional.  Chilkat MailMan automatically
// connects and authenticates -- using the property settings above -- whenever a server
// operation requires it.  Calling the explicit connect/authenticate methods can still be
// helpful to determine whether a failure occurs while connecting or while authenticating.