Mac Bulk SMS Software for USB Modems Screenshots Download Now Buy Now Click 'USB Modems Connection Wizard' button to connect your modems with software. Select Com Ports from connected device list and click 'Use Selected Device to Send SMS' option. Import phone numbers list, compose messages, and click Send button to send bulk messages. You can also skip duplicate numbers by 'Skip Duplicate Numbers' option. Wizard shows progress bar of messages sending process.