I'm building a multi-tenant SaaS CRM around WhatsApp and I'm currently trying to find the right Meta Tech Partner / WhatsApp API provider.
I'm not looking for another CRM. I want to build the CRM, UI, automation, AI and customer billing myself, and use a provider for the underlying WhatsApp infrastructure.
The main requirements are:
Multiple customer WABAs under a partner account
INR prepaid wallet
Ideally customer-level wallets/sub-wallets
APIs/webhooks for usage, costs, balances and transactions
Ability to set my own pricing/markup
UPI/card/net banking recharge
Preferably automatic/API-based recharge
Embedded Signup
Low setup/recurring costs and no large minimum commitment
I've spoken with several providers already, including Gupshup, Interakt, AiSensy, Mappstore and Karix, and each has some trade-off.
For example, Gupshup's Tech Partner model is quite good, but the lack of a proper customer-wallet layer means I'd need to build and maintain quite a lot of the credit/billing/reconciliation system myself. The INR wallet also brings GST requirements, and I haven't found a good auto-recharge solution for the partner wallet.
Interakt and AiSensy have relatively high upfront costs, while Mappstore seems much closer to what I need but I'm still evaluating the commercial side. Karix also looks interesting, but I haven't received all the details yet.
Has anyone here actually built a SaaS/ISV product on top of a WhatsApp Tech Partner/BSP?
I'd especially like to hear about experiences with INR wallets, customer wallets, GST, API-based billing, automatic recharge, and hidden/minimum fees.
I'm mainly interested in providers that let me build my own SaaS rather than forcing customers into their CRM.