You can try G-SMS. Absolutely easy to use.
★Fast sending speed: "G-SMS Software" adopts industry-leading technology, and its sending speed is unmatched by other similar software.
★High success rate: Use "G-SMS" to send group text messages, which is smooth nationwide and has a success rate of over 98%.
★Flexible delivery method: you can send it yourself or send it on behalf of others.
★Flexible sending time: You can send the number of purchased text messages at once or in batches, and the validity period is not limited.