SaaS AI Personal Assistant Platform (Self-Hosted, Multi-User, All-Channel Communication Automation) We are building a SaaS platform that acts as a smart, AI-powered personal assistant for business users. The platform will allow multiple users/clients to sign up, connect their communication channels (emails, WhatsApp, social media), and let the AI intelligently manage, respond, schedule, and take action based on their incoming messages. Think of it like a "self-hosted Zapier + Gmail Copilot + WhatsApp AI assistant"—but built with open-source AI models, hosted on our own servers, and optimized for small businesses. Platform Features 1. Multi-Tenant SaaS Architecture Each user gets their own account/dashboard Data isolation between users (important for privacy) Admin panel to manage clients, subscriptions, usage 2. Email Assistant (Supports All Types) Gmail, Outlook, and custom domain emails via IMAP/SMTP Categorize by priority, sender, keywords Generate smart replies Extract leads or action items Schedule follow-ups or meetings 3. WhatsApp & Messaging Bot WhatsApp Business API integration Auto-reply to customer queries Extract orders/leads from chats Forward or summarize in dashboard 4. Social Media Inbox Management Facebook, Instagram, Telegram, X, LinkedIn AI sorts & flags messages auto-reply or CRM sync 5. Smart Calendar & Scheduling Google & Outlook Calendar integrations Auto-create events from messages Smart conflict resolution & reminders 6. AI Brain Use open-source LLMs (LLaMA 3, Mistral, Mixtral, etc.) Intent recognition, priority scoring, auto-classification RAG / LangChain pipelines 7. Client Dashboard Inbox with AI summaries Task list & auto-generated replies Custom automation builder (Zapier-like logic) 8. Subscription & User Management Razorpay integration Plans: Free trial, Basic, Pro User login, billing portal, usage stats Preferred Tech Stack (Flexible, suggest best approach too) Frontend: React / Svelte / Vue Backend: Python (FastAPI or Flask), Node.js optional AI: RASA, LangChain, Whisper, Ollama Database: PostgreSQL Deployment: VPS