A double opt-in is a very good idea. It means a person has to confirm they want to get texts. After they text the keyword, they get a reply. The reply can say, "You are almost signed up! Reply YES to confirm." The person has to reply "YES." This makes sure the person truly wants to be on your list. This is a very important step. It helps you keep your list clean. It also protects you ... https://dataon.site