Rust

Save a Single Email Attachment to Disk

Demonstrates the Chilkat Email.SaveAttachedFile method, which saves the attachment at a given zero-based index to a directory. If the directory or any of its components do not exist, Chilkat creates them. This example adds an attachment and saves it.

Background: Where SaveAllAttachments writes every attachment at once, SaveAttachedFile saves just one by index — useful when you have inspected the attachments (by type, name, or size) and want to extract only a specific file. The attachment keeps its own filename; the same filename-safety considerations apply as when saving all of them.

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Rust


// Demonstrates the SaveAttachedFile method, which saves the attachment at a given
// zero-based index to a directory.  If the directory (or any of its components) does not
// exist, Chilkat creates it.

let email = chilkat::Email::new();
email.set_subject("Save one attachment");

let _ = email.add_string_attachment("report.txt", "Attachment content.");

// Save the attachment at index 0 into the specified directory.
if email.save_attached_file(0, "qa_output/attachments").is_err() {
    println!("{}", email.last_error_text());
    return;
}

println!("Saved attachment 0.");

// Note: The path "qa_output/..." is a relative local filesystem path,
// relative to the current working directory of the running application.