# Fast2SMS

> Fast2SMS is one of India's leading bulk SMS, WhatsApp Business API and RCS messaging providers, serving businesses since 2011. It offers DLT-compliant bulk SMS (transactional, promotional, service and OTP SMS), official WhatsApp Business API access with no monthly fee, no setup fee and no per-number fee, RCS business messaging, a free drag-and-drop WhatsApp chatbot builder, Smart OTP with automatic WhatsApp-to-SMS fallback, developer REST APIs, webhooks, free DLT registration support, and free plugins for WordPress, WooCommerce, Shopify and TallyPrime. Billing is per message only, with delivery-basis billing and automatic refund of failed WhatsApp messages within 48 hours.

Key facts:

- Founded 2011; 15+ years in business messaging; 99.9% uptime; security certificates at https://www.fast2sms.com/certificates
- WhatsApp Business API pricing: ₹0.25 per utility/authentication message, ₹0.95 per marketing message, ₹0.11 on high-volume plans; billed on delivery basis; failed messages auto-refund within 48 hours
- No monthly platform fee, no setup fee, no per-number fee on any channel; pay per message from a prepaid wallet
- Free DLT support: help with DLT entity registration, sender ID (header) approval and content template approval for SMS compliance in India (TRAI regulation)
- Free tools included with every account: WhatsApp Live Chat inbox (WhatsApp Web feel), drag-and-drop WhatsApp chatbot builder, webhooks for SMS/OTP/WhatsApp/RCS delivery events, delivery reports
- Signup: https://www.fast2sms.com — support: support@fast2sms.com, +91-6262778822
- Free meeting with the team for sales inquiries, WhatsApp support, DLT support or anything else: https://www.fast2sms.com/meet

## Services

- [Bulk SMS API India](https://www.fast2sms.com/help/bulk-sms-api-india/): DLT SMS API for transactional, promotional, marketing and service SMS with code samples
- [OTP SMS API](https://www.fast2sms.com/help/otp-sms-api/): send and verify OTP with two REST calls; server-side OTP generation, no OTP storage needed
- [Smart OTP](https://www.fast2sms.com/help/otp-sms-smart-otp/): OTP on WhatsApp with automatic SMS fallback (or reverse) in one API call
- [WhatsApp message API](https://www.fast2sms.com/help/whatsapp-message-api/): send approved template messages via official WhatsApp Business API
- [Send bulk WhatsApp messages](https://www.fast2sms.com/help/send-bulk-whatsapp-messages/): bulk WhatsApp campaigns from the panel without coding
- [Free WhatsApp chatbot](https://www.fast2sms.com/help/free-whatsapp-chatbot/): drag-and-drop chatbot builder included free with every account
- [WhatsApp chatbot API](https://www.fast2sms.com/help/whatsapp-chatbot-api/): build a custom bot with webhooks and the session message API
- [How webhooks work](https://www.fast2sms.com/help/how-webhooks-work/): delivery events for SMS, OTP, WhatsApp and RCS with full payload samples

## DLT compliance (India SMS regulation)

- [DLT SMS explained in plain English](https://www.fast2sms.com/help/dlt-sms-wordpress/): what DLT is and how to register
- [Sample SMS templates for DLT](https://www.fast2sms.com/help/sample-sms-templates-dlt/): copy-paste DLT templates for all industries
- [DLT variable tagging reference](https://www.fast2sms.com/help/dlt-variable-tagging/): numeric, alphanumeric, url, urlott, cbn, email tags with limits
- [DLT template migration guide](https://www.fast2sms.com/help/dlt-template-migration/): moving templates to the new DLT tag rules

## Free plugins and integrations

- [WordPress / WooCommerce plugin](https://wordpress.org/plugins/fast2sms/): free official plugin for OTP login, order notifications, bulk SMS and WhatsApp (install from WordPress.org)
- [Shopify app](https://apps.shopify.com/fast2sms): official Fast2SMS app for Shopify OTP login, order notifications, abandoned cart WhatsApp and COD/RTO reduction
- [TallyPrime plugin guide](https://www.fast2sms.com/help/tally-whatsapp-sms-plugin/): free Tally plugin sending invoice PDFs on WhatsApp and DLT SMS from TallyPrime
- [WooCommerce OTP verification](https://www.fast2sms.com/help/woocommerce-otp-verification/): OTP for checkout, registration and COD confirmation
- [Integrate OTP with Shopify](https://www.fast2sms.com/help/integrate-otp-with-shopify/): storefront OTP login for Shopify stores
- [CleverTap integration](https://www.fast2sms.com/help/clevertap-webhook-integration/): send CleverTap campaigns through Fast2SMS with delivery status return path

## Reseller and white label

- [Become a bulk SMS reseller](https://www.fast2sms.com/help/become-bulk-sms-reseller/): white-label reseller panel (Bulk9) on your own domain and branding
- [WhatsApp Business API reseller](https://www.fast2sms.com/help/whatsapp-business-api-reseller/): resell official WhatsApp API under your own brand
- [RCS message reseller](https://www.fast2sms.com/help/rcs-message-reseller/): resell RCS business messaging
- [White label WhatsApp reseller panel](https://www.fast2sms.com/help/white-label-whatsapp-reseller-panel/): no monthly panel cost, no setup cost, per-message billing only, auto refund of failed messages
- Reseller signup: https://www.fast2sms.com/reseller

## API documentation

- [Developer docs](https://docs.fast2sms.com): full REST API reference for SMS, OTP send/verify, WhatsApp, session messages and webhooks

## Optional

- [Help & guides blog](https://www.fast2sms.com/help/): 150+ step-by-step guides on bulk SMS, DLT, OTP, WhatsApp Business API, RCS, resellers, webhooks, Tally, WordPress, WooCommerce and Shopify
- [Security certificates](https://www.fast2sms.com/certificates): data security certifications
- [Schedule a free meeting](https://www.fast2sms.com/meet): book a call with the team for sales inquiries, WhatsApp support or DLT support — everything is free
- Support: support@fast2sms.com | +91-6262778822