Rust

Upload (Append) Email to an IMAP Mailbox and get the UID of the Appended Email

Upload / append an email to an IMAP mailbox and get the UID of the appended email. Rust

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

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

// Connect to an IMAP server.
// Use TLS
imap.set_ssl(true);
imap.set_port(993);
if imap.connect("imap.example.com").is_err() {
    println!("{}", imap.last_error_text());
    return;
}

// Login
if imap.login("myLogin", "myPassword").is_err() {
    println!("{}", imap.last_error_text());
    return;
}

// Check the capabilities of the IMAP server.
let cap = imap.capability().unwrap_or_default();
println!("IMAP capabilities: {}", cap);

// If the capabilities string contains the substring "UIDPLUS", then 
// the UID of the appended email will be available in the AppendUid property (see below).

// For example, the GMail IMAP server has these capabilities (at this current time)
// * 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

let email = chilkat::Email::new();

// Load the email from a .eml file.
if email.load_eml("myEmail.eml").is_err() {
    println!("{}", email.last_error_text());
    return;
}

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

// If the IMAP server supports the UIDPLUS extension, then the 
// imap.AppendUid will contain the UID of the appended email.
// Otherwise AppendUid will be 0.
println!("UID of appended email: {}", imap.append_uid());

// If the IMAP server does NOT have UIDPLUS, then a program can 
// first select the mailbox, get the value of the UidNext property,
// and then append.  The appended email SHOULD have a UID equal to 
// the UidNext that was obtained just prior to appending (assuming no other
// program is simultaneously appending an email to the same mailbox).

// Note: It is not required to select a mailbox to append.  The select is only
// done for the purpose of obtaining the UIDNEXT value.
if imap.select_mailbox("Inbox").is_err() {
    println!("{}", imap.last_error_text());
    return;
}

let uid_next = imap.uid_next() as i32;

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

println!("The UID of the appended email SHOULD be {}", uid_next);

println!("Email uploaded to Inbox!");

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