Birthday club sign-up at checkout with a free dessert offer

At checkout or on your website, offer guests a simple sign-up for a birthday club that asks only for name, email, and birth month. Two weeks before each birthday, send an automatic email with a code for a free dessert or appetizer redeemable that month.

Why it works: A birthday offer gives people a personal reason to come back on a specific date rather than an open-ended someday.