How many people might respond positively to a text message like this: “There’s a Covid vaccine appointment available today at 2:30, at 123 West 2nd St. Free co

How many people might respond positively to a text message like this: “There’s a Covid vaccine appointment available today at 2:30, at 123 West 2nd St. Free cookie and drink. Reply YES in the next 10 minutes to sign up.”