Last updated: August 2026
LocalBulkSMS operates exclusively as a local client on your Mac. All campaign data, phone contacts, customized templates, delivery status logs, and database backups are stored locally on your disk under ~/Library/Application Support/LocalBulkSMS/.
We do not collect, process, sell, or transmit any customer contacts, message payloads, or campaign logs to any third-party cloud servers. No remote database sync is implemented or required.
Messages sent via LocalBulkSMS are transmitted through your Mac's native Apple Messages application using local AppleScript automation. Your mobile carrier and Apple iMessage network deliver the messages directly to recipient devices without passing through any intermediate advertising or marketing networks.
The entire source code is openly hosted at github.com/cbronai/localbulksms. You can independently audit, inspect, and verify the privacy model.