Rust Requires Chilkat v11.0.0+

Process New Email by Scanning for Senders

Scan email and save application-selected emails to EML files with unique filenames. 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;
}

// Select an IMAP mailbox
if imap.select_mailbox("Inbox").is_err() {
    println!("{}", imap.last_error_text());
    return;
}

// We can choose to fetch UIDs or sequence numbers.
let fetch_uids = true;

// Fetch messages from the mailbox using a search criteria.
// This example finds NEW emails: these are emails that have the RECENT flag set, but not the SEEN flag:
let message_set = chilkat::MessageSet::new();
if imap.query_mbx("NEW", fetch_uids, &message_set).is_err() {
    println!("{}", imap.last_error_text());
    return;
}

// This example will download headers, and then download
// the full email for those emails sent from a contact
// in our database.

// When downloading headers, each email object contains
// (obviously) the headers, but the body will be missing.
// Also, attachments will not be included.  However, it is
// possible to get information about the attachments
// as well as the complete size of the email.
let bundle = chilkat::EmailBundle::new();
let headers_only = true;
if imap.fetch_msg_set(headers_only, &message_set, &bundle).is_err() {
    println!("{}", imap.last_error_text());
    return;
}

// Loop over the email objects...
let email_header = chilkat::Email::new();
let full_email = chilkat::Email::new();
let mut i = 0;
let num_emails = bundle.message_count();
while i < num_emails {
    let _ = bundle.email_at(i, &email_header);

    // The sender's email address and name are available
    // in the From, FromAddress, and FromName properties.
    // If the sender is "Chilkat Support <support@chilkatsoft.com",
    // then the From property will hold the entire string.
    // the FromName property contains"Chilkat Support",
    // and the FromAddress property contains "support@chilkatsoft.com";
    println!("{}", email_header.from());
    println!("{}", email_header.from_address());
    println!("{}", email_header.from_name());

    // Assume at this point your code checks to see if the sender
    // is one in your contacts database.  If so, this is
    // the code you would write to download the entire
    // email and save it to a file.

    // The ckx-imap-uid header field is added when
    // headers are downloaded.  This makes it possible
    // to get the UID from the email object.
    let uid_str = email_header.get_header_field("ckx-imap-uid").unwrap_or_default();
    let uid = uid_str.parse::<i32>().unwrap_or(0);

    if imap.fetch_email(false, uid as u32, true, &full_email).is_err() {
        println!("{}", imap.last_error_text());
        return;
    }

    // You can use the GenerateFilename method to
    // generate a unique filename...
    let filename = full_email.generate_filename().unwrap_or_default();

    // SaveEml saves the entire email, including attachments.
    let _ = full_email.save_eml(&filename).is_ok();

    println!("--");

    i = i + 1;
}

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