Summary
Businesses use WhatsApp Business to support, sell to and update customers on the channel those customers already check all day. The free app works when one or two people answer. Once several agents share a number or you need your CRM connected, the WhatsApp Business API is the logical next step. Its real value shows in how fast customers reply, not in an open rate.
TL;DR
- Close to nine in ten internet users in Spain use WhatsApp every month, so nobody has to install anything new to reach you.
- Be skeptical of the famous 98% open rate. Track reply time and resolved conversations instead.
- The free app is fine to start. Multiple agents, chatbots or integrations need the API.
- Airzone moved off WhatsApp Web, centralized its conversations and cut response times significantly.
You call a customer to confirm a delivery and they don't pick up. You email the quote and the reply shows up three days later, if at all. Meanwhile, that same person answers their family's, their team's and even their mechanic's WhatsApp messages within minutes.
That's the short answer to what WhatsApp Business is used for. It's the channel where your customers are already replying. They just aren't replying to you there yet.
This guide covers what WhatsApp Business actually is, five reasons more and more B2B companies put it at the center of their customer service, and what you need to get started without improvising.
What Is WhatsApp Business Used For, and How Is It Different From Regular WhatsApp?
WhatsApp Business is the version of WhatsApp built for companies. It adds a business profile, automated messages and, in its API version, access for multiple agents plus integration with your systems. Regular WhatsApp is made for private chats: it doesn't separate personal from professional, and it leaves no record of who answered what.
Two different products share the WhatsApp Business name, and picking the wrong one is the most expensive mistake you can make at the start.
WhatsApp Business App
The WhatsApp Business App is free and installs like any other app. You get a business profile with hours and address, a product catalog, quick replies, greeting and away messages, and labels to keep chats organized. It runs on one phone plus a few linked devices.
For a shop or a freelancer, that's plenty. The trouble starts when a team has to answer the same number: messages get stuck on one phone, nobody knows what a colleague promised, and nothing reaches your CRM.
WhatsApp Business API
The WhatsApp Business API, which Meta officially calls the WhatsApp Business Platform, isn't an app you download. It's a connection you access through a Meta approved provider, who builds the interface on top: a shared inbox for multiple agents, routing, chatbots and integrations. For the technical details, see our guide on what the WhatsApp Business API is.
Airzone, a leader in climate control solutions, ran into exactly that limit. It handled customers through WhatsApp Web, which restricted access to a few users and created problems with traceability, duplicated effort and zero connection to HubSpot. You'll see below what changed once it made the switch.
Reason 1: Your Customers Are Already on WhatsApp
The first benefit of WhatsApp Business is the simplest one: you don't have to move anyone to a new channel. WhatsApp has more than 3 billion monthly users worldwide, Meta announced in April 2025. In Spain, close to nine in ten internet users aged 16 to 64 use it every month, according to DataReportal.
In B2B, this matters even more than it looks. Your customer isn't always at a desk. It might be an installer on a job site, the purchasing manager at a repair shop, or a store manager restocking shelves between customers. They'll read your email at the end of the day. They'll see your WhatsApp the moment they pull out their phone.
There's a less visible effect too. If you don't offer WhatsApp, customers will use it anyway, by messaging your sales rep's personal phone. Nobody else in your company sees that conversation, and it walks out the door the day that rep changes jobs.
Reason 2: Higher Open and Reply Rates Than Email
WhatsApp gets your messages read and answered sooner than email. Still, be skeptical of exact numbers. The famous 98% open rate shows up on dozens of websites with no public methodology behind it. And email open rates aren't reliable either: since 2021, Apple Mail Privacy Protection downloads messages automatically and marks them as opened even when nobody read them, something Mailchimp acknowledges in its own documentation.
That's why we recommend measuring something else. The useful metric is how long a customer takes to reply and how many conversations close without a phone call. A delivery notice a customer confirms with a thumbs up in ten minutes is worth more than any open rate in a report.
It's worth being honest about email, because it wins in some places. For a long newsletter, a contract or a low cost mass send, it's still the better choice. On WhatsApp, marketing messages require the customer's prior opt in, and every template you send carries a fee set by Meta. We break that down in how WhatsApp Business API pricing works. Use WhatsApp for what needs a reply and email for what needs a paper trail.
Reason 3: Real Time Communication That Improves Customer Satisfaction
WhatsApp combines the best of phone and email. The conversation is instant when both sides are available, but the customer can reply whenever it suits them without losing the thread. There are no hold queues, and no missed call that turns into another missed call.
In practice, this changes how questions get solved. An installer sends a photo of the equipment label, and your tech support sees the exact model without anyone reading serial numbers over the phone. A customer forwards the quote with one specific question highlighted. Everything stays in the history, so the next agent doesn't ask the same thing again.
If your phone lines are already swamped, you don't have to choose one channel over the other. With WhatsApp call deflection, callers can pick an option in the phone menu to continue on WhatsApp and get a message right away. The customer skips the wait, and your team handles the question when it has a moment, not when the phone rings.
Reason 4: Automation Without Losing the Personal Touch
WhatsApp Business lets you automate repetitive questions without turning customer service into an answering machine. The rule we'd apply is simple: automate the sorting and the data, not the relationship. A bot can ask for an order number, share opening hours or send the conversation to the right department. A person handles the quote, the complaint or the negotiation.
Airzone is a good example. With Saysimple, it moved from WhatsApp Web to a platform that manages multiple channels from one place, segments conversations by market, and automates service through call deflection to WhatsApp, chatbots and smart workflows. The native HubSpot integration gave it a unified view of each customer, and inquiries now go straight to the right department instead of bouncing between people. The result, according to the case itself, was significantly reduced response times and customers who now benefit from faster and clearer responses.
“We’d recommend this solution to any company looking to centralize communication, improve customer service, and scale efficiently.” The Airzone Team
You can read the full story in the Airzone case study. The mistake we see most often goes the other way: a chatbot acting as a gatekeeper that won't let anyone through. If a customer can't find a way to reach a person within two messages, your automation is working against you.
Reason 5: One Channel for the Whole Customer Journey (Sales, Support and Marketing)
WhatsApp covers the entire customer journey, not just support. In a B2B company, day to day conversations almost always revolve around the same things: product availability, delivery times, alternatives when something is out of stock, prices and order status. These are operational, urgent and repetitive messages, exactly the kind of communication where WhatsApp shines.
Your sales team can follow up on a quote in the same chat where the customer asked about stock. Customer service sorts out a delivery issue without asking for the details again. Marketing sends, with prior opt in, a heads up about a new product or a stock clearance. What matters is that everything lives in a single history: with the Saysimple Omnichannel Inbox, any colleague sees what was discussed before, whatever department they're in.
This table sums up what each reason solves and when the free app falls short:
| Reason | What it solves | Is the free app enough? |
|---|---|---|
| 1. Customers are already there | Reaching customers on the channel they already use | Yes, to get started |
| 2. More replies than email | Notices and quotes that get answered sooner | At small scale. Sending approved templates requires the API |
| 3. Real time | Fewer hold queues and missed calls | With one or two agents, yes. Call deflection to WhatsApp requires the API |
| 4. Automation | Automatic replies and routing | Only greeting and away messages. Chatbots and routing require the API |
| 5. The whole journey | Sales, support and marketing in one history | No, if several teams share the number or you need your CRM |
How to Start Using WhatsApp Business in Your Company
Getting started doesn't take a big project, but it does take a few decisions up front. Here's the order we recommend:
- Count who will answer. If it's one or two people, start with the free app. If it's more, or several locations share a number, go straight to the API.
- Verify your business in Meta Business Manager using the same details as your official business registration.
- Pick the number. It has to be a business number that isn't active on another WhatsApp account.
- Choose a provider that gives you a shared inbox, routing and CRM integration, with support in your language.
- Prepare your templates. To message a customer outside the 24 hour window, you need a template approved by Meta.
- Estimate the cost. The WhatsApp pricing calculator gives you a monthly estimate based on your message volume.
- Launch with a single use case, such as delivery notices or call deflection, and expand once your team has it down.
Frequently Asked Questions About WhatsApp for Companies
What's the difference between the WhatsApp Business App and the WhatsApp Business API?
The app is designed for a single user or a very small team on one phone. The API lets multiple agents manage WhatsApp at the same time, automate replies and connect it to a CRM or a platform like Saysimple.
How many people use WhatsApp in Spain?
Close to nine in ten internet users aged 16 to 64 use WhatsApp every month, according to DataReportal. That makes it one of the most common ways to contact a business in the country.
Is it safe to use WhatsApp for customer service?
Yes, as long as you use the API and not personal phones. The API requires verifying your business through Meta Business Manager, and messages travel encrypted. The bigger real world risk is usually somewhere else: customer conversations stored on an employee's private phone, with no access control and no history.
Which companies benefit most from WhatsApp Business?
Companies with several agents or locations serving the same customer, especially in automotive, wholesale distribution, technical installation or staffing. The more operational and repetitive the questions, the faster you'll notice the difference.
Ready to Put WhatsApp at the Center of Your Customer Service?
What WhatsApp Business is used for in your company ultimately depends on where your conversations live today. If they're scattered across personal phones, unanswered emails and an overloaded phone system, WhatsApp isn't just another channel. It's how you bring them together in one place where customers actually reply.
Saysimple is a B2B Commerce Customer Engagement Platform: omnichannel, built for WhatsApp Business and other channels, and powered by AI and automation. Want to see how WhatsApp would fit your team? Request a Saysimple demo and we'll walk through it with your own use cases.
Sources
- DataReportal, Digital in Spain, for the share of internet users in Spain who use WhatsApp.
- Mailchimp, Apple Mail Privacy Protection FAQs, on how this feature inflates email open rates.
- WhatsApp Business Platform, Meta's official page for the business API.
