Real-time payment status updates and receipt delivery

**Purpose**

1.1 Enable automatic, real-time notification of payment status and immediate digital or printed receipt delivery for Aadhaar registration, streamlining user experience and compliance.
1.2 Minimize manual intervention, reduce waiting times, and ensure every registrant receives their payment confirmation and receipt via preferred channels.
1.3 Provide audit-ready logs of payment events and receipt delivery for governmental tracking and transparency.

**Trigger Conditions**

2.1 Payment transaction marked as complete by the payment gateway or on-site terminal.
2.2 Successful acknowledgment received from government ledger or accounting platform.
2.3 User data with mobile/email is available for notification.

**Platform Variants**

3.1 **Twilio SMS**
• Feature/Setting: SMS API; configure SendMessage endpoint with dynamic phone number and payment/receipt text.
• Example: POST to /2010-04-01/Accounts/{AccountSid}/Messages.json
3.2 **SendGrid**
• Feature/Setting: Email API; use /mail/send to dispatch PDF or text email receipts instantly.
• Example: Attach dynamic receipt file; set recipient and subject dynamically.
3.3 **Razorpay**
• Feature/Setting: Webhook for payment_success; on event trigger, invoke receipt generation API.
• Example: Configure webhook for payment.captured event to POST payment data.
3.4 **Paytm**
• Feature/Setting: Webhook for transaction status; integrate to trigger receipt email/SMS via API.
• Example: Register callback URL in Paytm dashboard.
3.5 **Cashfree**
• Feature/Setting: Payment notification API; capture responses to automate downstream receipt issue.
• Example: Use payout/notify_v1 endpoint.
3.6 **Zoho Books**
• Feature/Setting: Sales Receipt API; POST payment details for automatic receipt issuance.
• Example: Use /salesreceipts endpoint for record creation and email dispatch.
3.7 **Freshdesk**
• Feature/Setting: Ticket automation on payment; auto-send confirmation and receipt attachment.
• Example: Configure automation rules for new ticket with payment tag.
3.8 **Gmail API**
• Feature/Setting: Send automated emails using send endpoint with dynamic body and attachment.
• Example: Use /users/{userId}/messages/send with receipt attachment.
3.9 **WhatsApp Business API**
• Feature/Setting: Send message template with payment status and receipt link/file.
• Example: POST /v1/messages with dynamic customer and receipt placeholders.
3.10 **India Post SMS Gateway**
• Feature/Setting: Government SMS push with payment confirmation text.
• Example: Use SMPP interface with dynamic message payload.
3.11 **Tally ERP**
• Feature/Setting: Voucher API webhook; on new receipt voucher trigger print/export receipt.
• Example: Integration via XML/REST for automation.
3.12 **QuickBooks Online**
• Feature/Setting: Sales Receipt API; create receipt record and auto-email customer.
• Example: POST to /v3/company/{companyId}/salesreceipt endpoint.
3.13 **Stripe**
• Feature/Setting: Webhook for payment_intent.succeeded; automation trigger for external comms.
• Example: Configure webhook, process event, invoke SMS or email send.
3.14 **Mailgun**
• Feature/Setting: Email sending API; auto-dispatch payment receipts as PDF/email body.
• Example: POST /v3/{domain}/messages with dynamic recipient and attachment.
3.15 **AWS SES**
• Feature/Setting: Programmatic email on payment complete; supports HTML and attachments.
• Example: Use SendEmail API with dynamic parameters.
3.16 **Slack**
• Feature/Setting: Incoming webhook; notify Aadhaar center staff of completion and receipt delivery.
• Example: POST to webhook URL with payment details in JSON.
3.17 **Office 365 Outlook**
• Feature/Setting: Automated email rules via Graph API for receipt mail dispatch.
• Example: POST /me/sendMail with dynamic template.
3.18 **ClickSend**
• Feature/Setting: SMS API for transactional notifications; configure with payment/receipt template.
• Example: POST to /v3/sms/send with dynamic message.
3.19 **DocuSign**
• Feature/Setting: Envelope creation for digital receipts; send for e-delivery to user email.
• Example: POST /restapi/v2.1/accounts/{accountId}/envelopes with receipt as document.
3.20 **HubSpot**
• Feature/Setting: Workflow automation; configure to trigger email/SMS via integrations on payment.
• Example: Enable workflow with payment trigger -> send email/SMS action.
3.21 **Google Sheets**
• Feature/Setting: Record payment/receipt events, trigger Apps Script for notification.
• Example: On edit trigger, call Apps Script to send email/SMS.

**Benefits**

4.1 Reduces staff workload through instant, error-free communication.
4.2 Enhances citizen trust and transparency with prompt digital delivery of receipts.
4.3 Provides real-time, verifiable audit logs for regulatory compliance.
4.4 Supports multi-channel, user-preferred delivery (SMS, email, print).
4.5 Scalable for high-volume Aadhaar centers, reducing queues and bottlenecks.
4.6 Easy historical tracking and troubleshooting of payment and receipt issues.