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Airdun is a recovery layer that sits on top of Stripe. When a subscription payment fails, Airdun detects the failure, builds a recovery plan for that specific case, and executes it across the channels you have enabled — until the payment succeeds or the sequence is exhausted. It is not a flow builder. You do not design sequences, write copy, or set retry timing. You connect Stripe, enable channels, and switch on the autopilot.

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Requirements

  • A SaaS business running subscription billing on Stripe.
  • A sending domain you control, if you want to use the email channel.
  • The Airdun snippet installed in your product, if you want to use the in-app wall.

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How it works

When a payment fails in Stripe, Airdun:
  1. Creates a recovery case — capturing the failure reason, customer history, usage signals, subscription value, and the contact channels available for that customer.
  2. Designs a strategy — the algorithm weighs the case context (failure type, customer segment, country, timezone) to build a multi-touchpoint plan.
  3. Executes the plan — messages go out via email, SMS, WhatsApp, and/or the in-app wall, timed to the customer’s local timezone and written in their language.
  4. Stops automatically — the moment the payment succeeds, every pending touchpoint in that case is cancelled.

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Failure types handled

Each failure type resolves differently, and the strategy accounts for that:
  • Card expired — the customer must update their card before a retry can succeed.
  • Insufficient funds — retry timing matters; the schedule is anchored to likely payday windows.
  • Bank block — the issuing bank flagged the charge; customer action is usually required.
  • 3DS friction — authentication was started but not completed.
  • Authorization failures, limit exceeded, card declined — each has its own resolution path and channel ordering.
See Recovery Cases for the full list and what a case contains.

Get started

Create your account, connect Stripe, configure your channels, and switch on the autopilot.