A business using WhatsApp can start with the WhatsApp Business app for basic customer conversations, or use the WhatsApp Business Platform when a team needs shared operational control, connected integrations, automation or higher-volume messaging. The choice depends on team size, messaging volume and workflow complexity, including whether WhatsApp needs to connect with other systems.
This guide compares the app with the Platform. It covers shared inboxes and team workflows, API access, current pricing rules, and the Singapore consent, Do Not Call and opt-out checks that apply to WhatsApp marketing.
Business with WhatsApp starts with choosing the right product
Choose based on your team size, messaging volume and need for connected systems. The WhatsApp Business app suits a small team starting out. The WhatsApp Business Platform suits a business that needs shared operational control, integrations, automation or higher-volume messaging.
WhatsApp Business app: a practical starting point
The WhatsApp Business app is free to download. It includes business profiles, greeting messages, away messages, quick replies, labels, catalogs and carts. Meta describes the app as having limited customisation and integrations, so it may become restrictive as more staff, channels or processes are added.
WhatsApp Business Platform: the official API path
The WhatsApp Business Platform is Meta's programmatic messaging product for medium and large businesses. It supports API-based messaging, interactive messages, automation, CRM and marketing-automation integrations, customer-care routing and conversational flows.
The Platform is a better fit when a business needs conversations connected to its wider operations. An integration layer such as Mobitech's WhatsApp Business API can bring WhatsApp alongside other customer channels and connect conversations to CRM, ticketing and automation. The Platform is the API path; the team interface and workflow depend on the direct build or partner chosen.
Can multiple staff members use one WhatsApp business number?
Yes. The WhatsApp Business app supports up to four linked devices on one number, so multiple staff members can view and respond to customer messages from their own devices. Meta also says businesses can assign users, use multi-device support and add notes to customer profiles.
What the WhatsApp Business app can support
This setup can suit a small team with a manageable enquiry volume. Staff can share access to the same number, add customer notes and continue conversations across linked devices. The limit is operational control: app-level access does not create structured routing, ownership, escalation or connected records by itself.
When a shared inbox needs more structure
A growing team may need each enquiry assigned to an owner, routed by intent and recorded after resolution. Meta's WhatsApp Business Platform documentation describes API access, webhooks, CRM integrations, smart routing and automated conversational flows as building blocks for this model.
The Platform does not automatically include a complete shared inbox, CRM, ticketing system or analytics dashboard. A business must connect a direct build or choose a partner that provides the interface and workflow layer.
What a WhatsApp team workflow should look like
A practical workflow for a business with WhatsApp should move each enquiry from capture to a named owner, through resolution and follow-up.
Capture and qualify the enquiry
Start by capturing the message, identifying the customer and recording their intent. Ask only for the information needed to decide what happens next. Then assign or route the conversation to an owner, such as sales or support at a specific outlet. Meta requires automated responses during the 24-hour customer service window to provide a clear path to help, such as a human-agent transfer, phone, email, web support or an in-store visit.
Assign, resolve and record the conversation
After resolution, record the outcome in CRM or ticketing and schedule any follow-up. An omnichannel workspace such as Mobitech can keep context when a conversation moves between WhatsApp, social media, email and website chat.
How to access the WhatsApp Business Platform API
Direct access or a Business Solution Provider?
Businesses can access the WhatsApp Business Platform directly or work with an approved Business Solution Provider. Direct access suits teams that can call APIs and connect the Platform to their own systems through webhooks. A partner can provide the integration layer and an operational interface.
Phone number and account requirements
Onboarding includes setting up a WhatsApp Business Account, creating a business profile, verifying the phone number and completing business verification. The Platform requires a dedicated number in international format that can receive an SMS or voice call for verification.
Starting and scaling messaging access
New Platform accounts begin with messaging limits. Access can scale from 1,000 to 10,000 to 100,000 business-initiated conversations and eventually become unlimited, provided the business maintains high-quality interactions.
Message rules and WhatsApp Business Platform pricing
A business may contact someone on WhatsApp only if it has their mobile number and opt-in permission for subsequent WhatsApp messages or calls. It must also honour any request to block or discontinue messages, or to opt out.
The 24-hour customer service window
When a user messages the business, non-template replies are allowed during the 24-hour customer service window. The window resets each time the user sends another message. After it closes, the business must use an approved Message Template.
What pricing depends on
Meta's current pricing page says businesses are charged per delivered message, with rates based on the recipient market and message category: marketing, utility, authentication and service. Do not publish an exact Singapore rate without checking Meta's live rate card or calculator.
Singapore compliance checks before sending WhatsApp marketing
Consent
Get clear, unambiguous permission before sending marketing messages on WhatsApp. Singapore's PDPA requirements apply alongside Meta's rules, so meeting one does not replace the other.
DNC and opt-out handling
The PDPA's Do Not Call provisions generally prohibit marketing messages to Singapore telephone numbers listed on the DNC Registry. You do not need to check the DNC Registry where the recipient has given clear and unambiguous consent. Covered messages must include an opt-out method using the same medium, and marketing messages must stop within 21 days of an opt-out request.
Extra care for clinics and regulated businesses
Do not assume WhatsApp is suitable for every type of sensitive information. Meta's policy restricts telemedicine or health-related information where applicable regulations prohibit using systems without heightened requirements.
How to choose a WhatsApp setup for your business
The app may be enough when
Start with the app when a small team needs a business profile, quick replies, labels, catalogs and access from linked devices. The app becomes harder to manage as enquiries need clear ownership, follow-up or handoffs across teams or outlets.
Choose an API-connected workflow when
An API-connected setup fits when the business needs structured routing, multiple teams or outlets, CRM and ticketing connections, automation, human escalation or higher-volume messaging. Mobitech can unify WhatsApp with social media, email and website chat, then connect conversations to CRM, ticketing and automation in one workspace.
The practical decision is to start with the app when basic shared access is sufficient, then move to an API-connected workflow when the team needs reliable routing, follow-up, compliance controls and connected customer context across channels.