The WhatsApp Business app falls short when the team and the volume grow.
The WhatsApp Business app is free and fits a business that serves from one phone: up to four linked devices and broadcast lists of 256 contacts. The official API removes those limits, but on its own it's a connection, not a tool. In Shimli the API comes ready with an inbox for the whole team, campaigns and AI agents.
Why choosing well matters
- 4
- linked devices at most, besides the primary phone, on a WhatsApp accountWhatsApp, official blog · 2023 ↗
- 256
- contacts per broadcast list in the app, and only those who saved your number receive itWhatsApp Help Center ↗
- 250 → unlimited
- unique users a day with templates on the API: starts at 250 and scales to 2,000, 10,000, 100,000 and unlimited with quality and volumeMeta for Developers, messaging limits ↗
What changes for the team
The app's problem doesn't show up on day one: it shows up when five people are answering, when you need to send to the whole portfolio or when someone leaves with the phone.
With the app, the team shares a phone
- One phone and up to four linked devices
- Several advisors replying from the same account
- Broadcasts of 256 contacts, by hand, list by list
- No integration with your CRM or core
- Nobody answers after hours
- The history lives on the phone
It works fine until the business grows.
With the API in Shimli
I want to handle WhatsApp with my whole team and have an AI agent resolve the repetitive part.
- Official API connection: Shimli is a Meta Business Partner
- The whole team in one inbox, with assignment and pipeline
- Campaigns with approved templates, measured end to end
- An AI agent that answers at any hour, within your rules
- Every conversation lands in the CRM, connected to your systems
The same number, with the team and the agent behind it.
The comparison, point by point
What each option offers according to WhatsApp and Meta documentation. The API is the same; what changes is what surrounds it.
| Criterion | WhatsApp Business appfree | Official API alonea connection |  Official API in Shimliready for the team |
|---|---|---|---|
| Who can answer | One phone and up to four linked devices | No limit on people, if you build the tool | The whole team in one inbox, with assignment |
| Bulk sends | Lists of 256 contacts, only to those who saved your number | Approved templates, from 250 users a day up to unlimited | Template campaigns from the Flow Builder, with measurement |
| Automation | Quick replies and greeting or away messages | It has to be coded | Flows, bots and AI agents without code |
| Integration with your systems | No | Via API, with your own development | CRM, core and databases via API and MCP |
| Each customer's history | On the phone | Wherever you store it | One conversation per customer in the CRM, across all channels |
| Cost | Free | Meta's per-message rate, plus development | Meta's per-message rate, plus the Shimli plan |
The API connection is included in the $139 monthly plan, with unlimited WhatsApp templates. Messages are billed by Meta at each market's rate. See pricing
When each one fits
It isn't a contest: they're tools for different problems.
The app is enough if…
- One or two people answer from one phone.
- You don't need to send to thousands of customers or connect your systems.
The API in Shimli fits if…
- Several people answer and you need to assign and measure.
- You run campaigns, collections or orders at scale.
- You want an AI agent answering at any hour.
Frequently asked questions
What people ask when comparing.
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