WhatsApp receipt for Paymob payments

When a Paymob payment succeeds, the customer gets a WhatsApp receipt instantly.

Medium Saves ~5 hours/month MENA & local appsBy Flowngn team

Works with n8n · Make · Zapier

Keep customers happy

How it works

Trigger: Webhook — Paymob transaction processed callback

Receive the transaction callback from Paymob.
Pull out the amount, order number, customer name and phone.
Continue only if the payment succeeded.
Send an approved WhatsApp template receipt in Arabic.

Diagram

Trigger App Logic Code

Code

JavaScript used in the Code step — already included in the template below.

Read payment · Code node

// Mode: Run Once for Each Item
// Paymob "transaction processed" callback → clean, easy-to-use fields.
const obj = $json.body?.obj || {};
const billing = obj.order?.shipping_data || obj.payment_key_claims?.billing_data || {};

return {
  json: {
    success: obj.success === true,
    transaction_id: obj.id,
    order_id: obj.order?.merchant_order_id || obj.order?.id,
    amount: (obj.amount_cents || 0) / 100,
    currency: obj.currency,
    method: obj.source_data?.sub_type || obj.source_data?.type || "",
    customer_name: [billing.first_name, billing.last_name].filter(Boolean).join(" "),
    phone: String(billing.phone_number || "").replace(/[^0-9]/g, ""),
    email: billing.email || "",
    error: obj.data?.message || "",
    date: obj.created_at,
  },
};

Build it

Pick your tool — same automation, step by step.

Copy and paste straight into an n8n canvas (Ctrl+V), or download and use Import from File. Then connect your own credentials and replace every YOUR_… placeholder.

Workflow JSON

Show code (165 lines)

{
  "name": "WhatsApp receipt for Paymob payments (Flowngn)",
  "nodes": [
    {
      "parameters": {
        "content": "## WhatsApp receipt for Paymob payments\nWhen a Paymob payment succeeds, the customer gets a WhatsApp receipt instantly.\n\n**Setup**\n1. Open each node and connect your own credentials.\n2. Replace every YOUR_… placeholder.\n3. Test once, then activate.\n\nFree template from Flowngn",
        "height": 260,
        "width": 340
      },
      "id": "43ef56f7-3e64-497c-a29d-9f8e76873bd0",
      "name": "Setup notes",
      "type": "n8n-nodes-base.stickyNote",
      "typeVersion": 1,
      "position": [
        -420,
        -60
      ]
    },
    {
      "parameters": {
        "httpMethod": "POST",
        "path": "paymob-callback",
        "options": {}
      },
      "id": "43ef56f7-3e64-497c-a29d-9f8e76873bd0",
      "name": "Paymob callback",
      "type": "n8n-nodes-base.webhook",
      "typeVersion": 2,
      "position": [
        0,
        0
      ],
      "webhookId": "43ef56f7-3e64-497c-a29d-9f8e76873bd0"
    },
    {
      "parameters": {
        "jsCode": "// Mode: Run Once for Each Item\n// Paymob \"transaction processed\" callback → clean, easy-to-use fields.\nconst obj = $json.body?.obj || {};\nconst billing = obj.order?.shipping_data || obj.payment_key_claims?.billing_data || {};\n\nreturn {\n  json: {\n    success: obj.success === true,\n    transaction_id: obj.id,\n    order_id: obj.order?.merchant_order_id || obj.order?.id,\n    amount: (obj.amount_cents || 0) / 100,\n    currency: obj.currency,\n    method: obj.source_data?.sub_type || obj.source_data?.type || \"\",\n    customer_name: [billing.first_name, billing.last_name].filter(Boolean).join(\" \"),\n    phone: String(billing.phone_number || \"\").replace(/[^0-9]/g, \"\"),\n    email: billing.email || \"\",\n    error: obj.data?.message || \"\",\n    date: obj.created_at,\n  },\n};",
        "mode": "runOnceForEachItem"
      },
      "id": "43ef56f7-3e64-497c-a29d-9f8e76873bd0",
      "name": "Read payment",
      "type": "n8n-nodes-base.code",
      "typeVersion": 2,
      "position": [
        300,
        0
      ]
    },
    {
      "parameters": {
        "conditions": {
          "options": {
            "caseSensitive": true,
            "leftValue": "",
            "typeValidation": "loose"
          },
          "conditions": [
            {
              "id": "c1",
              "leftValue": "={{ $json.success && $json.phone !== '' }}",
              "rightValue": "",
              "operator": {
                "type": "boolean",
                "operation": "true",
                "singleValue": true
              }
            }
          ],
          "combinator": "and"
        },
        "options": {}
      },
      "id": "43ef56f7-3e64-497c-a29d-9f8e76873bd0",
      "name": "Paid?",
      "type": "n8n-nodes-base.if",
      "typeVersion": 2.2,
      "position": [
        600,
        0
      ]
    },
    {
      "parameters": {
        "operation": "sendTemplate",
        "phoneNumberId": "YOUR_PHONE_NUMBER_ID",
        "recipientPhoneNumber": "={{ $json.phone }}",
        "template": "YOUR_RECEIPT_TEMPLATE|ar",
        "components": {
          "component": [
            {
              "type": "body",
              "bodyParameters": {
                "parameter": [
                  {
                    "type": "text",
                    "text": "={{ $json.customer_name || 'عميلنا العزيز' }}"
                  },
                  {
                    "type": "text",
                    "text": "={{ $json.amount }} {{ $json.currency }}"
                  },
                  {
                    "type": "text",
                    "text": "={{ $json.order_id }}"
                  }
                ]
              }
            }
          ]
        }
      },
      "id": "43ef56f7-3e64-497c-a29d-9f8e76873bd0",
      "name": "Send WhatsApp receipt",
      "type": "n8n-nodes-base.whatsApp",
      "typeVersion": 1,
      "position": [
        900,
        0
      ]
    }
  ],
  "connections": {
    "Paymob callback": {
      "main": [
        [
          {
            "node": "Read payment",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Read payment": {
      "main": [
        [
          {
            "node": "Paid?",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Paid?": {
      "main": [
        [
          {
            "node": "Send WhatsApp receipt",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "pinData": {},
  "settings": {
    "executionOrder": "v1"
  },
  "meta": {
    "templateCredsSetupCompleted": false
  },
  "tags": []
}

Open in the playground to edit →

Tips

Paste your production webhook URL as the Transaction processed callback in your Paymob integration.
Verify the HMAC signature before trusting a callback — see the Paymob HMAC flow.

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