Private founder cohort

Get close support before we automate the relationship.

StackFlight is accepting a small number of founders. You get the complete customer-proof workspace and a direct line to the person building it. We learn from real use instead of hiding behind a checkout page.

For

Startup founders

Payment

Private invoice

Customers

No account needed

What happens next

A clear process. No awkward checkout surprise.

  1. 01

    Request access

    Leave your work email. There is no card, charge, or commitment at this step.

  2. 02

    Talk founder to founder

    We will discuss what you are validating, how you reach customers, and whether StackFlight can help now.

  3. 03

    Agree the pilot privately

    If the fit is real, we agree the plan, currency, invoice, and bank-transfer details directly—never on a public page.

  4. 04

    Receive your invitation

    After payment is confirmed, your approved email receives the private signup invitation and workspace access.

For customer participants

Proof links stay open and frictionless.

Only founders need workspace access. Customers can answer a private proof link, see their fit result, and choose whether to connect without creating an account or paying anything.

See how proof links work