Question: Is there a platform that allows me to customize messages based on WebHook or form fields and send them to WhatsApp?

If you're looking for a service that lets you customize messages based on WebHook or form fields and send them to WhatsApp, WhatsHook is a great option. The service lets you send real-time notifications and updates from web apps and APIs to a WhatsApp account via a special, randomly generated URL. It's got features like HTML forms, customizable messages and debugging to make it easy to integrate with other systems and APIs. WhatsHook is geared for developers and growth hackers who want to stay current with real-time WhatsApp updates.

Another top contender is Botpress, a ChatGPT chatbot builder that has more than 100 integrations, including WhatsApp. Botpress uses OpenAI's Large Language Models and Generative Pre-trained Transformers, so it's a serious option for building professional AI agents. It's got features like customizable messages, personalization through database synchronization and a rich API and SDK for customization. Botpress also has a free tier with enough features to get started, so it's good for small to medium-sized projects.

If you want a more general-purpose option, check out ChatBotKit. The service lets developers and nondevelopers build AI chatbots that work on multiple interfaces, including WhatsApp. It's got support for multiple languages, custom datasets and integration with popular chat apps like Slack and Discord. ChatBotKit's powerful API and SDK let you customize it for all sorts of use cases, from AI experiences to customer support.