Your product knows who’s in.

Your app should create the account the moment someone is invited, without a spreadsheet in between.

What you get

Webhooks

Signup, confirmed, referred, invited and unsubscribed. Signed with HMAC and a timestamp, retried when your server is down, and replayable from the log.

REST API

Read and update people, positions and answers with a secret key. Keys are stored hashed and can be rotated.

Automation tools

Point a webhook at Zapier, Make or n8n to connect anything else.

In practice

The invite webhook hits your app, your app creates the account, and the invite email links straight into onboarding.

Goes well with

Invites in batchesPick the next 50 by position or answer, and send them their invite.IntegrationsPlannedSync confirmed signups to Brevo, Klaviyo, Mailchimp or Loops.Embed anywhereA web component, a plain HTML form that works without JavaScript, or the API.

Early access

Early birds get in first.

Join the waitlist for Waitlark. We invite people in small groups, and waitlist members get the early-bird price.