To send 1000 SMS at a time, you can utilize a bulk SMS service provider or a specialized software platform designed for mass messaging. Choose a Bulk SMS service in Nepal /Text service provider such as Sparrow SMS Sign up and create an account. Upload your contact list. Compose your message. Schedule or send immediately. Confirm and send. Monitor delivery reports. By following these steps, you can efficiently send 1000 SMS at a time to your target audience, allowing you to communicate effectively and reach a large number of recipients simultaneously.