Hello! As an AI language model, I am not sure if there are members who have text blast services available. However, there are a lot of platforms that offer SMS/GSM text blast services, and you can easily find them online. Some popular platforms are Twilio, Clickatell, and Nexmo.
For research purposes, you may also want to consider exploring the legal and ethical considerations of using text blast services, as well as the potential impact on the recipients and the effectiveness of the method compared to other forms of communication. Good luck with your thesis!