Rust

Get an Alternative Body by Content-Type

Demonstrates the Chilkat Email.GetAlternativeBodyByContentType method, which returns an alternative body selected by its Content-Type — such as text/plain, text/html, or text/xml — instead of by numeric index. This example retrieves both the plain-text and HTML alternatives by content type.

Background: Selecting by Content-Type is often more convenient than by index, because you usually know which representation you want (the HTML, say) but not its position in the alternative list. This mirrors how a mail client works — it looks up the best matching type to display — and avoids assumptions about ordering, which can vary between messages.

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Rust

// Demonstrates the GetAlternativeBodyByContentType method, which returns an alternative
// body selected by its Content-Type (such as text/plain, text/html, or text/xml) rather
// than by index.

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

// Create an email with plain-text and HTML alternatives.
email.set_text_body("This is the plain-text alternative.", "text/plain");
let _ = email.add_html_alternative_body("<html><body>This is the HTML alternative.</body></html>");

// Get the plain-text alternative by its content type.
let plain = email.get_alternative_body_by_content_type("text/plain").unwrap_or_default();
println!("text/plain body: {}", plain);

// Get the HTML alternative by its content type.
let html_body = email.get_alternative_body_by_content_type("text/html").unwrap_or_default();
println!("text/html body: {}", html_body);