WABA
A WABA, or WhatsApp Business Account, is the account in your Meta business portfolio that holds your WhatsApp API phone number, message templates and billing.
Read WhatsApp message templateMessage template
A WhatsApp message template is a pre-written message that Meta reviews before you can send it.
Read WhatsApp customer service window24-hour window
The 24-hour window, which Meta calls the customer service window, opens when a customer messages or calls your business on WhatsApp.
Read WhatsApp coexistenceCoexistence
WhatsApp coexistence lets a business use the WhatsApp Business app and the WhatsApp Business API on the same phone number at the same time.
Read WhatsApp Official Business Account badgeGreen tick
The green tick is what many Indian businesses call WhatsApp's verified badge.
Read WhatsApp Business Solution ProviderBSP
A BSP, or Business Solution Provider, is a company Meta has approved to give other businesses access to the WhatsApp Business API, with messaging, billing and support.
Read WhatsApp opt-inOpt-in
WhatsApp opt-in is a customer's permission to receive messages from your business.
ReadFrequently asked questions
Where do these definitions come from?
From Meta's own WhatsApp Business Platform documentation and the WhatsApp Business Messaging Policy, checked on 25 Oct 2026 and linked on each page.
What's the difference between the WhatsApp Business app and the API?
The app is a free phone app for one person replying by hand. The API lets a team share a number, connect software and AI, and send approved templates at scale. With coexistence, one number can use both.
Does Rainmaqer AI use the official WhatsApp Business API?
Yes. Rainmaqer AI runs on the official WhatsApp Business API and sets it up with you during onboarding.