Guides

These pages answer real questions about the WhatsApp Business API, channels, apps and pricing. Every figure and rule carries its source and the date it was read — and what could not be confirmed says so.

• WhatsApp Business app or the API? What actually changes for a companyThe app is free and serves one person. The API puts a whole team on one number, and carries fees and rules.
• How WhatsApp message templates get approved — and the first cause of rejectionA template is submitted with a category, and Meta approves or rejects it. The wrong category is the most common cause of rejection.
• Meta's 24-hour customer service window, explainedThe customer opens it. Inside it you reply with anything, free; outside it you need an approved template.
• One inbox for WhatsApp, Instagram and Telegram: how a team actually works itThe problem is not the number of apps. It is that nobody knows who is answering what.
• What a signed webhook is, and why your integration must verify itWithout verification, anyone who knows the URL can send you fake events.
• Telegram bots for customer service: when they are worth itCheaper and faster to set up than WhatsApp — but only if your customers are actually there.
• An app or a website? How to decideAn app costs more and lives longer. The question is: how often will the customer come back?
• What determines the price of custom softwareNot the page count. What moves the price is the unknown, and clarity is what shrinks it.