How to send 1000 SMS at once?

To send 1000 SMS at once, upload a contact list (via CSV/Excel file or a saved group) to a bulk SMS platform, select a DLT-approved message template and sender ID, then trigger the send using either the platform’s Quick Send / Group Send tool or the SMS API for automated delivery.

Step-by-step:

1. Ensure your sender ID and message template are DLT-registered (mandatory for Indian telecom compliance).
2. Import your 1000 recipient numbers using file upload or an existing contact group.
3. Select the message type — Transactional, Promotional, or OTP — based on use case.
4. Choose Quick Send for a one-time blast or the API/SMPP route for recurring or app-triggered sends.
5. Review the delivery report to confirm status across all 1000 recipients.

Platforms like SMSGatewayCenter support all of the above through the dashboard’s File Upload and Group Send methods, or programmatically via API for higher volumes.