> ## Documentation Index
> Fetch the complete documentation index at: https://docs.airdun.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Smart Retries: Intelligent Stripe Payment Retry Logic

> How Airdun schedules retry attempts: payday-aware, country-aware, and failure-aware logic, coordinated with the outreach sequence.

Smart Retries determine *when* Airdun re-attempts a charge, rather than retrying on a fixed interval. Three inputs shape the schedule.

## Three inputs to the retry schedule

<AccordionGroup>
  <Accordion title="Payday-aware timing" icon="calendar-check">
    Airdun estimates likely payday dates from the customer's country and billing history, and holds the retry for the window when the account is most likely to have sufficient funds — typically just after a payday — rather than firing on a fixed day-3 schedule.
  </Accordion>

  <Accordion title="Country-aware retry windows" icon="globe">
    Salary cadences, bank processing times, and account replenishment patterns differ by market. Airdun applies country-specific retry windows and frequency limits rather than a single global default.
  </Accordion>

  <Accordion title="Failure-aware logic" icon="triangle-exclamation">
    The retry approach depends on the failure reason:

    * **Expired card** — retrying immediately cannot succeed; Airdun prioritizes outreach to prompt a card update before attempting again.
    * **Insufficient funds** — retries are held and timed around likely payday dates.
    * **Bank block or do-not-honor** — customer action is usually required; Airdun routes to outreach first and retries only after engagement signals.
    * **3DS / authentication required** — Airdun surfaces the authentication request through outreach rather than re-attempting without customer involvement.
  </Accordion>
</AccordionGroup>

## Coordination with outreach

<Note>
  Smart Retries are not standalone. The retry schedule and the outreach sequence are timed together, so a customer receiving a payment reminder is also being retried at the moment that reminder is most likely to have had an effect.
</Note>

## Enabling and disabling

Smart Retries are toggled from the **Channels** page in your dashboard, below the channel toggles. Disabling them reverts to Stripe's default retry schedule. See [Channels Setup](/configuration/channels-setup).