I'm creating a website for my business and I want to offer free first deliveries for the first week but I'm afraid people will take advantage of that.
I don't take any money or credit card info through the website, everything is done in person.
I was thinking of sending an email confirmation but it is very easy to keep making emails. I was also thinking of sending a text message with a 4 digit pin to enter but I have absolutely no clue how to do that. Is there any good method I could use.