Letterby
Waitlist tool with built-in referrals and gamification
Letterby is a waitlist and referral tool for collecting sign ups before a product launch. Visitors move up the list by inviting friends, and points can be awarded for actions such as inviting someone, joining an event, filling out a questionnaire, or finishing onboarding.
Core features include a form builder, custom emails, a sign up page hosted on your own domain, contact import, and an embeddable website widget. It also provides newsletters and email campaigns, smart audiences, a contact management CRM, built-in analytics, and questions and answers. Integrations are available through Zapier, a REST API, and webhooks.
Letterby is aimed at founders and teams validating an idea or building an audience ahead of launch. It is packaged as a free Starter plan with limits on contacts, emails, and projects, and a paid Pro plan with higher limits, unlimited projects and emails, and a seven-day trial. Both plans include API and webhook access, and all plans are subject to a Fair Use Policy.
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