Rust

IMAP Capability

Demonstrates how to send the CAPABILITY command to request a listing of capabilities that the IMAP server supports. A capability name which begins with "AUTH=" indicates that the server supports that particular authentication mechanism. Rust

// This example assumes the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

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

// Use TLS
imap.set_ssl(true);
imap.set_port(993);
if imap.connect("MY-IMAP-DOMAIN").is_err() {
    println!("{}", imap.last_error_text());
    return;
}

// Authenticate
if imap.login("MY-IMAP-LOGIN", "MY-IMAP-PASSWORD").is_err() {
    println!("{}", imap.last_error_text());
    return;
}

// Get the list of capabilities:
let caps = imap.capability().unwrap_or_default();
println!("Capabilities: {}", caps);

// Here is an example of the string returned:
// * CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 
// UIDPLUS COMPRESS=DEFLATE ENABLE MOVE CONDSTORE ESEARCH UTF8=ACCEPT APPENDLIMIT=35882577
// LIST-EXTENDED LIST-STATUS

// Chilkat v9.5.0.58 introduces the HasCapability method to
// check to see if a particular capability exists:
if imap.has_capability("QUOTA", &caps) {
    println!("IMAP server supports the QUOTA extension.");
}

if imap.has_capability("IDLE", &caps) {
    println!("IMAP server supports IDLE.");
}

// Disconnect from the IMAP server.
let _ = imap.disconnect().is_ok();