Author
Smaran Challapalli
Smaran Challapalli builds WhaBuzz, a WhatsApp Cloud API gateway for developers. Smaran also runs Fisique, a personal-training studio in Hyderabad whose WhatsApp notifications moved from WATI to Plivo to Meta's Cloud API directly. That migration is where WhaBuzz came from. Smaran is also the founder of KerbCode, a small product studio.
- Website: smaranchallapalli.com
- LinkedIn: linkedin.com/in/smaranchallapalli
- GitHub: github.com/WhaBuzz
Posts by Smaran Challapalli
- WhatsApp Business API pricing in IndiaWhat the WhatsApp Business API costs in India from 1 Oct 2026: Meta's per-message rates, what a provider adds, and a worked monthly example.
- BSP vs Tech Provider vs Cloud APIWhat a WhatsApp BSP (Solution Partner), a Tech Provider and a direct Cloud API integration mean, who bills what, and when going direct is better.
- WhatsApp webhooks that never lose an eventHow to receive WhatsApp Cloud API webhooks without losing or double-processing events: signatures, retries, dedupe_key, seq and replay.
- Stop Duplicate WhatsApp API MessagesWhy WhatsApp API sends get duplicated by timeouts and retries, and how WhaBuzz's Idempotency-Key header and webhook dedupe_key prevent double sends.
- WhatsApp template approval and rejectionsHow Meta reviews WhatsApp message templates, the three categories, why templates get rejected, and how to catch the result through the API.
- The WhatsApp 24-hour window explainedHow the WhatsApp customer service window works, the free entry point window, template rules, error 131047, and the 1 Oct 2026 billing changes.
- Move from WATI to your own Meta accountHow to move a WhatsApp number from a BSP such as WATI to a Tech Provider setup on your own Meta account: ownership, templates, webhooks and cutover order.
- Move WhatsApp sending from Plivo to WhaBuzzHow to move WhatsApp sending from Plivo's API to WhaBuzz: request shapes, webhooks, number migration and a safe cutover order.
- WhatsApp API error codes and what to doThe WhatsApp Cloud API error codes you will actually hit, Meta's meaning for each, whether to retry, and how WhaBuzz returns them verbatim.
- Send WhatsApp Messages from Node.jsSend a WhatsApp template and a text message from Node.js with the whabuzz npm package, verify signed webhooks and handle errors, with working code.
- Send WhatsApp Messages from PythonSend WhatsApp template and text messages from Python with plain requests against the WhaBuzz REST API, handle errors and verify webhooks with hmac.
- WhatsApp API for multi-tenant SaaS platformsHow a SaaS sends WhatsApp for many client businesses: one tenant per customer, Embedded Signup per number, separate webhooks and per-number billing.
- WhatsApp API data residency in IndiaWhat Meta says about Cloud API local storage in India, what it does not publish, where WhaBuzz stores data and how long each kind of data is kept.
- WhatsApp messaging limits and quality ratingMeta's WhatsApp messaging limit tiers, throughput, the 131056 pair rate limit and quality rating, and how to pace sends so you stay inside them.
Comparisons by Smaran Challapalli
- WhaBuzz vs Meta Cloud API directWhaBuzz compared with calling Meta's WhatsApp Cloud API directly: fees, webhooks, replay, sandbox and tenants, with Meta's own pages as sources.
- WhaBuzz vs TwilioWhaBuzz vs Twilio for the WhatsApp API: fees, who bills Meta, API shape and webhooks. Twilio wins on reach and channels; WhaBuzz on a flat fee.
- WhaBuzz vs PlivoWhaBuzz vs Plivo for the WhatsApp API: Plivo's new platform and WABA fees, API shape, webhooks and when each fits. Facts checked 16 Oct 2026.
- WhaBuzz vs GupshupWhaBuzz is a flat-fee WhatsApp API with Meta's own bodies. Gupshup is a conversational platform with a per-message fee, AI agents and campaigns. Compared.
- WhaBuzz vs WATIWhaBuzz is a flat-fee WhatsApp API for developers. WATI is a team inbox, campaign and chatbot platform with plans from ₹2,999 a month. Compared.
- WhaBuzz vs AiSensyWhaBuzz is a flat-fee WhatsApp API with Meta's own bodies. AiSensy is a no-code chatbot and campaign platform with per-message rates. Compared.
- WhaBuzz vs InteraktWhaBuzz is a flat-fee WhatsApp API for developers. Interakt is a shared inbox, campaign and chatbot platform from ₹2,799 a month. Compared with sources.
- WhaBuzz vs 360dialogWhaBuzz and 360dialog both stay close to Meta's Cloud API. Compare fees in rupees and euros, API headers, webhook retries and scope.
- WhaBuzz vs MSG91MSG91 is a multichannel messaging platform with a WhatsApp inbox and chatbots. WhaBuzz is a WhatsApp-only API. Fees, webhooks and scope compared.
- WhaBuzz vs KaleyraWhaBuzz vs Kaleyra for the WhatsApp API. Kaleyra now sits under Tata Communications and publishes no prices or public API docs. Short, honest comparison.
- WhaBuzz vs InfobipWhaBuzz vs Infobip for the WhatsApp API: pricing, webhooks, data locations and scope. Infobip is a full omnichannel platform; WhaBuzz is API only.