Rust

Load an Email from MIME in a StringBuilder

Demonstrates the Chilkat Email.SetFromMimeSb method, which loads an email from the MIME text stored in a StringBuilder object. On success, it replaces the entire current email. This example serializes one email into a StringBuilder with GetMimeSb, then reconstructs it in a second object.

Background: This is the StringBuilder counterpart to SetFromMimeText. When the MIME already lives in a StringBuilder — perhaps assembled or edited there — passing it directly avoids converting to an intermediate string, which is more efficient for large messages.

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Rust


// Demonstrates the SetFromMimeSb method, which loads an email from MIME text stored in a
// StringBuilder object.  On success, it replaces the entire current email.

// Build a source email and get its MIME into a StringBuilder.
let source = chilkat::Email::new();
source.set_subject("Source message");
source.set_from("alice@example.com");
source.set_body("Hello from a StringBuilder.");
let sb_mime = chilkat::StringBuilder::new();
let _ = source.get_mime_sb(&sb_mime);

// Load a new email object from the StringBuilder MIME.
let email = chilkat::Email::new();

if email.set_from_mime_sb(&sb_mime).is_err() {
    println!("{}", email.last_error_text());
    return;
}

println!("Loaded subject: {}", email.subject());