Bulk SMS Software - Multi USB Modem Screenshots Download Now Buy Now Click 'USB Modems Connection Wizard' option to connect your modems with software. Select Com Ports from connected device list and Click on 'Use Selected Device to Send SMS' option. Click 'Load Contacts From File' option to import contact numbers list saved in excel file or text file. Compose messages, select any one option Standard SMS or Notification and click Send button to send text messages. You can also use other feature such as Retry attempts on Failed SMS, Use Exclusion Rules, Delayed Delivery option etc. Progress bar shows current status of text messages sending process.