Reminder emails
An almost there email when only a few more buyers are needed, and a reminder a set time before the deadline. Both ask buyers to share again and go out once per round.
Abuse limits
Limit how many times one person joins a round, matched by email (Gmail dots and plus tags ignored), phone, customer account and shipping address.
Waitlist
When a deal is full or over, shoppers leave their email and are told when the next round opens.
Recurring deals
Restart a deal automatically when it ends, after a gap you choose, for weekly group orders such as coffee or produce boxes.
