Download the Full Version of a Partial Email

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Demonstrates the Chilkat MailMan.FetchFull method, which downloads the complete version of a header-only or partial Email and stores it in a second Email. The full result includes the complete body and any attachments, and the partial email must retain its UIDL. This example previews message 1 (headers only) and then downloads it in full.

// Demonstrates the MailMan.FetchFull method, which downloads the complete version of a
// header-only or partial Email and stores it in a second Email.  The full result includes
// the complete body and any attachments.  The partial email must retain its UIDL.

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");

// First fetch message 1 as headers only (a fast preview).  headerOnly=true.
let partial_email = chilkat::Email::new();

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

println!("Preview subject: {}", partial_email.subject());

// Now download the complete message (body and attachments).
let full_email = chilkat::Email::new();
if mailman.fetch_full(&partial_email, &full_email).is_err() {
    println!("{}", mailman.last_error_text());
    return;
}

println!("Full email NumAttachments: {}", full_email.num_attachments());

// 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.