chore: add async/await example to readme

README.md

@@ -50,6 +50,33 @@ client.send(
 );
 ```
 
+## EXAMPLE USAGE - using async/await
+
+```js
+// assuming top-level await for brevity
+import { SMTPClient } from 'emailjs';
+
+const client = new SMTPClient({
+	user: 'user',
+	password: 'password',
+	host: 'smtp.your-email.com',
+	ssl: true,
+});
+
+try {
+	const message = await client.sendAsync({
+		text: 'i hope this works',
+		from: 'you <username@your-email.com>',
+		to: 'someone <someone@your-email.com>, another <another@your-email.com>',
+		cc: 'else <else@your-email.com>',
+		subject: 'testing emailjs',
+	});
+	console.log(message);
+} catch (err) {
+	console.error(err);
+}
+```
+
 ## EXAMPLE USAGE - html emails and attachments
 
 ```js