Platform Capabilities

Everything you need to reach your users

A complete omnichannel messaging infrastructure — from transactional OTPs to mass marketing campaigns.

Auto-Failover Routing Simulator

Watch how our pool engine manages SMTP timeouts and redirects queue.

1. Trigger API Request

Application hits `/v1/email/send` using the custom pool `transactional_otp`.

2. SMTP Timeout Detected

Primary server `smtp.mandrill.com` fails to handshake within 2000ms. Engine marks server as cooled down.

3. Automatic Failover Router

Queue switches to Route priority 2: `smtp.sendgrid.com` which is active and has available quota.

4. Successful Dispatch

Email accepted by SendGrid and webhook sent back. Wallet debits ₹0.01. Complete in 3.1s total.

WhatsApp Marketing & Broadcasts

Send high-converting promotional broadcasts, catalog alerts, templates, and media messages via Meta's official Cloud API. Configure custom variables for personalized customer engagement at scale.

Promotional & marketing alerts
Approved custom templates
Rich media (images, PDFs, videos)
Delivery & read receipts via webhooks

SMTP Pool with Auto-Failover

Attach multiple SMTP senders for transactional alerts and bulk newsletters. If a sender bounces, our daemon redirects queue priorities to secondary pools dynamically.

Warm-up scheduling support
TLS / SSL / STARTTLS configurations
Custom from-address aliases
Dynamic cooldown thresholds

WhatsApp OTP Service

Generate, hash, and verify 6-digit OTPs sent via WhatsApp template. Configurable expiry, max-attempt lockout, and wallet debit per OTP. Refund issued automatically on send failure.

Argon2id-hashed OTP storage
Configurable expiry (default 5 min)
Max 5 verify attempts
Auto-refund on send failure

Bulk Promotional Campaigns

Upload CSV lists of leads and launch large marketing broadcasts instantly. Our worker daemon schedules dispatches, manages Meta rate-limits, and retries failures in real-time.

Cursor-based batch broadcasts
Custom newsletter templates
Segmented subscriber variables
Live dashboard audits

Wallet & Razorpay Billing

Pre-funded wallet model — top up via Razorpay checkout. Every API call atomically debits the balance. Invoices generated monthly. Low-balance alerts to prevent campaign interruptions.

Atomic balance transactions
Razorpay payment verification
Monthly invoice generation
Low-balance email + UI alerts

API Key Authentication

Generate scoped API keys shown once at creation. Keys are SHA-256 hashed at rest — never stored in plaintext. Revoke instantly from the dashboard.

Keys prefixed with 'dpk_'
SHA-256 hash stored only
Per-key last-used tracking
Instant revocation

Webhook Receivers

Receive Meta delivery status updates and Razorpay payment callbacks. All incoming webhooks are HMAC-SHA256 verified and timestamp-checked to block replay attacks.

HMAC signature verification
Replay attack prevention
Full payload logged
Delivery status fan-out

Security First

Built with security at every layer — argon2id passwords, AES-256-GCM for stored credentials, rate limiting per IP and API key, CORS locked to origins, and a full audit log of all admin actions.

Argon2id password hashing
AES-256-GCM credential encryption
Rate limiting via Redis
Immutable audit log

Multi-Tenant Client Portal

Each client gets a self-service portal: manage their own API keys, campaigns, wallet, invoices, and SMTP senders. Admins can toggle portal access per client.

Per-client API key scoping
Client-owned SMTP senders
Wallet self-service topup
Admin-controlled access

Facebook OAuth (Premium)

Premium plan customers can sign in with Facebook. Server-side OAuth code exchange only — no client-supplied tokens accepted. Accounts are auto-linked by verified email.

Server-side code exchange only
CSRF state + PKCE protection
Auto-link by verified email
New account auto-created if needed

Ready to integrate?

Get started in minutes. Read the API docs or create an account and explore from the dashboard.