Retries and Replay

Automatic retries#

Each event gets up to 6 attempts. An attempt fails when your server returns a non-2xx status, takes longer than 5 seconds, or cannot be reached. After a failure we wait and try again, doubling the wait each time:

So the last attempt is about 15 minutes after the call. While retries are pending the call shows pending; after the sixth failure it shows failed.

Refund when delivery fails#

If every attempt fails, the Rs 0.30 charge for that event is credited back to your wallet automatically. The call stays in your log and CSV either way.

Replay#

After you fix your server, send failed events again. Replays go to the subscription's current URL and are not charged.

• One delivery: press Replay on it in the delivery log, or call
  POST /webhooks/subscriptions/:id/deliveries/:delivery_id/replay
• All failed deliveries in a window (up to 10,000 per call):

curl -X POST https://voice-api.edesy.in/v1/webhooks/subscriptions/SUBSCRIPTION_ID/deliveries/replay \
  -H "Authorization: Bearer vp_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{ "status": "failed", "since": "2026-10-18T00:00:00Z" }'

{ "data": { "replayed": 7 } }

since and until are RFC 3339 timestamps; only "failed" is supported for status. See Webhook Subscriptions.

De-duplicate on call_sid#

A retry or replay carries the same data.call_sid. Your server may also see an event twice if it processed a request but replied too late. Store call_sid and skip events you have already handled:

if (await db.seen(event.data.call_sid)) return; // already handled
await db.markSeen(event.data.call_sid);

Note that two separate calls from the same person are two events with two different call_sid values. If you want one lead per caller, de-duplicate on data.from in your own system.

Events that were never sent#

If your wallet balance was too low when the call came in, the event is withheld and was never queued, so there is nothing to retry or replay. Those callers are still in your log and CSV. See Pricing and Wallet.