You can send email notification to one or few client from your Control Panel.
This email will send to your client contact email address.
Here is step how to send email notification :
1. From your control panel, click Reseller Manager
2. Click Email Manager at the tab menu.
3. You will see list of your Client ID at the recipient box, you can click the Client ID that you want to send
    email if you want send it to few or all client you can hold CTRL button at the keyboard and left click
    your mouse button.
4. Enter your Email Subject.
5. Enter your Email message at the Body text box.
6. Click “Send E-mail”