Resend Messages

Retry failed WhatsApp messages intelligently with preserved original content and recipient. Credits are only deducted on successful delivery.

Original Message Preserved

Resend with the exact same recipient, content, and type — no reconfiguration needed

Credit Safety

Credits are only deducted on successful retry — failed resends cost nothing

Smart Retry Logic

Schedule retries with configurable delays and automatic backoff

Resend Analytics

Track resend success rates and optimise your retry strategy

Authentication Required

Use Basic Auth with your dashboard Base64 token. The messageId must belong to a previously failed message.

Resend Policy

Only messages with status failed can be resent. Note that if the failure was due to a closed conversation window (WA003), you must send a template message first to re-open the window.

Resend Success Rate

82%

first retry success

Avg Retry Time

2.1m

failure to success

Max Retries

per message lifetime

Expiry Window

48h

message valid for retry

POST

/v1/whatsapp/resend

Retry

Idempotent

Request Body

application/json

JSON

{
  "messageId": "exa_wa_123456789_abc123def"
}

Response

JSON

{
  "success": true,
  "message": "WhatsApp message resent successfully",
  "data": {
    "messageId": "exa_wa_resend_789_xyz456",
    "originalMessageId": "exa_wa_123456789_abc123def",
    "status": "delivered",
    "to": "233244000000",
    "resendAttempt": 2,
    "cost": 1,
    "deliveredAt": "2024-01-15T10:35:00Z"
  }
}

Recommended Retry Strategy

1 minute

Initial retry after failure

5 minutes

Second attempt with longer delay

15 minutes

Third attempt

30 minutes

Fourth attempt

1 hour

Final attempt before expiry

When to Resend

Network Failure

Temporary carrier or network issue — automatic retry recommended

Window Closed

24-hour window expired — switch to a template message first

Media Error

Fix the media URL, then resend the message

Implementation Examples

Bash

curl -X POST 'https://api.sendexa.co/v1/whatsapp/resend' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: Basic YOUR_DASHBOARD_BASE64_TOKEN' \
  -d '{
    "messageId": "exa_wa_123456789_abc123def"
  }'

Resend Success Rates by Attempt

Attempt 1

82%

Attempt 2

68%

Attempt 3

45%

Attempt 4

25%

Attempt 5

11%

HTTP Status Codes

Code	Status	Description
200	OK	Message resent successfully
202	Accepted	Resend scheduled for later
400	Bad Request	Message not in a resendable state
401	Unauthorized	Invalid or missing credentials
409	Conflict	A resend for this message is already in progress

Resend Best Practices

Implement exponential backoff with increasing delays between retries
Check the error code before retrying — not all failures are retryable
For WA003 (window closed), send a template first, then resend
Set a maximum of 5 retry attempts to avoid infinite loops
Use webhooks to trigger retries automatically on failure