How to send text messages to customers when new tea is on the market

It can be said: "this year, new tea is on the market, and all new and old customers are invited to taste tea for free." Welcome to guide us. And there are gifts "and so on. My language is poorly organized, so I will think about it later. Please ask the communication company to send short messages in groups, and the charge is not high. After answering, I wish you a prosperous business!