If you're looking for a Sense alternative, Botpress could be worth a look. It's a chatbot builder that taps into OpenAI's Large Language Models (LLMs) and Generative Pre-trained Transformers (GPT) and supports more than 100 integrations with services like Telegram and WhatsApp. Botpress also comes with features like professional greetings, database synchronization for personalization and an API for customizations. It's more geared for building AI chatbots, but it can handle a lot of notification duties, so it's a good option for community notifications.
Another option is ChatBotKit. It lets you build AI chatbots that converse in natural language across multiple interfaces like Slack, Discord and WhatsApp. ChatBotKit supports multiple languages, custom datasets and a range of foundation models from companies like OpenAI and Anthropic. It's got a template wizard to make deployment easy and integrates with common chat apps. That makes it a good option for communities that want to automate and improve their communication channels.
Both of these services have powerful features for building and integrating AI chatbots across many interfaces, helping you keep your community active and engaged.