Building a multi-tenant WhatsApp SaaS for clinics in Turkey — need embedded signup solution that actually works
Hey everyone,
I'm building a SaaS platform for private clinics in Turkey (think: AI-powered clinic assistant that handles patient communication via WhatsApp). Each clinic subscribes and connects their own WhatsApp Business number to use the AI agent.
The core problem:
I need each clinic owner to connect their own WhatsApp Business number without leaving my platform — essentially an embedded signup flow. I am NOT trying to use one shared number for all clients. Each client = their own WABA + phone number.
What I've researched so far:
- Meta Tech Provider program — the "correct" path, but 2-4 month approval process, heavy technical requirements, and I'm a non-technical founder
- 360dialog Partner program — has embedded signup ✅ but €500/month flat fee + €49/number. Way too expensive at early stage
- Twilio — explicitly says ISVs cannot use self sign-up, must go through Meta Tech Provider program
- WATI — not designed for reselling API access, per-account model
- ChakraHQ — looks promising (~$3/number/month, official Meta BSP, embedded signup), but based in India and I have serious KVKK (Turkish data privacy law) concerns since I'm handling health-adjacent data
- Desk360 (Turkish BSP) — free platform but no embedded signup, requires manual setup per client which doesn't scale
What I actually need:
- ✅ Embedded signup — clinic owner connects their WhatsApp number inside my platform in a few clicks
- ✅ Official Meta Cloud API (no grey-area WhatsApp Web scrapers — accounts getting banned is not an option for clinics)
- ✅ Multi-tenant API — I manage all connected numbers programmatically via webhooks + REST API
- ✅ Affordable at early stage (starting with 5-20 clients)
- ✅ Ideally EU/Turkey data residency or at minimum GDPR-compliant (health data sensitivity)
Questions:
- Has anyone actually shipped a multi-tenant WhatsApp platform as an ISV without going through the full Meta Tech Provider program? How?
- Is ChakraHQ's embedded signup flow genuinely smooth for non-technical end users?
- Any BSPs I've missed that offer embedded signup + ISV/partner API access at a reasonable price point?
- How are you handling GDPR/data residency when health-related conversations flow through a third-party BSP?
Any advice from people who've actually built on top of WhatsApp Business API at scale would be hugely appreciated. This feels like a problem many vertical SaaS builders must have hit.