Rust

Start IMAP IDLE to Monitor a Mailbox

Demonstrates the Chilkat Imap.IdleStart method, which sends the IMAP IDLE command to begin listening for unsolicited mailbox updates. It takes no arguments. A mailbox must first be selected, and the server must advertise the IDLE capability.

Background: IDLE is IMAP's push mechanism: instead of polling for new mail, the client tells the server "notify me when something changes," and the server pushes updates as they happen. This is what enables near-instant new-mail alerts. While IDLE is active, no other IMAP command may be sent on that connection — call IdleDone to leave IDLE before issuing other commands.

Chilkat Rust Downloads

Download Chilkat for Rust

Rust


// Demonstrates the Imap.IdleStart method, which sends the IMAP IDLE command to begin listening
// for unsolicited mailbox updates.  It takes no arguments.  A mailbox must be selected and the
// server must advertise the IDLE capability.

let imap = chilkat::Imap::new();

imap.set_ssl(true);
imap.set_port(993);

if imap.connect("imap.example.com").is_err() {
    println!("{}", imap.last_error_text());
    return;
}

if imap.login("user@example.com", "myPassword").is_err() {
    println!("{}", imap.last_error_text());
    return;
}

if imap.select_mailbox("Inbox").is_err() {
    println!("{}", imap.last_error_text());
    return;
}

// Enter IDLE mode to monitor the mailbox for changes (new mail, deletions, flag changes).
if imap.idle_start().is_err() {
    println!("{}", imap.last_error_text());
    return;
}

println!("IDLE mode started.");

// While IDLE is active, no other IMAP command may be sent.  End IDLE before doing more work.
if imap.idle_done().is_err() {
    println!("{}", imap.last_error_text());
    return;
}

if imap.disconnect().is_err() {
    println!("{}", imap.last_error_text());
    return;
}