WhatsApp is a free cross-platform messaging and internet telephony (VoIP) application owned by Meta. It lets users send text and voice messages, make voice and video calls, and share images, documents, location and other content. It works over an internet connection, replacing traditional SMS and MMS services. For companies it is a key channel for communicating directly with customers through the WhatsApp Business and WhatsApp Business API platforms.
With more than two billion active users, WhatsApp is the most popular chat application in the world. Its main pillar is end-to-end encryption, which ensures that only the sender and the recipient can read a message's content — not even Meta itself has access.
There are two versions for business:
- WhatsApp Business App: intended for small companies for manual communication, building a product catalogue and setting up automatic greetings.
- WhatsApp Business API: a solution for medium and large companies allowing connection to CRM systems, bulk notifications and the use of chatbots.
What are the advantages of WhatsApp?
- A high open rate: messages on WhatsApp have an open rate as high as 98%, many times more than email marketing.
- Security and privacy: thanks to encryption it is ideal for sharing sensitive information or documents.
- Multimedia support: it allows sending not only text but also interactive buttons, PDF invoices, video guides and a store's location.
- Building trust: the personal nature of chat lowers barriers and lets brands come across as more approachable and more human.
- WhatsApp Channels: the new channels feature lets companies broadcast news to a large audience, much as on Telegram.
What are the disadvantages of WhatsApp?
- Dependence on a phone number: every account has to be tied to a real SIM card or a virtual number.
- Risk of being seen as spam: overly aggressive marketing can lead to users blocking the number, which damages your reputation with Meta.
- Automation limits (the app version): without the API, managing a large volume of messages is technically demanding for bigger teams.
- Personal data protection: although messages are encrypted, Meta collects metadata (who communicates with whom and when), which can be a problem for some users.
Practical example
A customer orders a new coffee machine from an e-shop. Instead of a conventional email that might end up in spam, the company sends an order confirmation through the WhatsApp Business API with an interactive “Track your parcel” button. A day later the system automatically sends a short video showing how to set the machine up for the first time. The customer has a follow-up question about maintenance, writes it straight into the chat and a chatbot answers immediately. The result is an outstanding customer experience and a minimal load on the company's support team.