I want to offer a free something to the first 50 newsletter subscribers that order after I send out the newsletter. I'm trying to find the best way to "track" this without having them manually type "free blah, blah, blah" in the comments section. I've assigned a discount code with 0 as the discount and have it linked in my newsletter. What will happen? Will it work like I think it will and that no dollars will be subtracted but that when I download my orders, I'll see that the code was used?
Does anyone do something similar? Or have a different idea of how I can do this?