The app is free and fine, right up to the day two people need to answer the same number.
The five signals you have outgrown the app
- More than one person needs to answer, and linked devices are not enough
- Broadcast lists cap out at 256 contacts, and only reach people who saved your number
- The business number lives on someone’s personal phone
- You need automated replies beyond the app’s simple away message
- Nobody can report on response times or outcomes
The broadcast list trap
The app’s broadcast list is capped at 256 contacts, and it only delivers to people who have saved your number in their phone. That second condition is the one that surprises people: a 256-contact broadcast can reach a fraction of that in practice.
On the API there is no broadcast-list concept and no saved-number requirement. What limits you instead is the Meta messaging limit, which starts at 1,000 unique customers per 24 hours and rises with your sending record.
What the API and a shared inbox add
- Unlimited agents answering one number simultaneously
- Roles, permissions and department routing with schedules
- Conversation history owned by the business, not by a handset
- Chatbots, AI agents and automations
- Per-message delivery reporting and campaign analytics
- CRM fields, segments and tags behind every conversation
What you give up, honestly
A number registered to the WhatsApp Business API cannot also be used in the consumer or Business app. Your team works through the inbox instead, on desktop or a mobile browser.
You also start paying Meta per template message delivered, where the app was free. For a business sending a handful of messages a day, the app is genuinely the right tool and moving would be a waste of money.
How the move actually works
- Register the existing number as a co-existing number so you keep it.
- Complete Meta business verification for your legal entity.
- Get your first templates approved before cutover.
- Add team members, roles and departments in the shared inbox.
- Cut over, and warm the number up rather than blasting day one.