https://www.google.com/search?q=supabase+waiting+list&oq=supabase+waiting+list&gs_lcrp=EgZjaHJvbWUyBggAEEUYOdIBCDU5MjVqMGo3qAIAsAIA&client=ms-android-samsung-ss&sourceid=chrome-mobile&ie=UTF-8&chrome_dse_attribution=1 https://tinloof.com/blog/how-to-build-a-waitlist-with-supabase-and-next-js https://resend.com/ https://github.com/silentworks/waiting-list https://www.builtatlightspeed.com/theme/silentworks-waiting-list