TopicBox - AI Email Classifier

Classify Gmail emails by topic using AI. Filter, organize, and pick questions for your episodes.

Turn your overflowing inbox into organized, actionable content. TopicBox is a Chrome side panel that works alongside Gmail to classify your emails by topic using AI. Whether you're a podcaster sorting listener questions, a show host planning episodes, or a content creator mining your inbox for ideas, TopicBox brings order to the chaos. How It Works 1. Open TopicBox from the Chrome side panel while in Gmail 2. Select a date range and hit classify 3. AI reads your emails and assigns each one to a topic like Career, Finance, Health, Relationships, and more 4. Browse, filter, and pick the best questions for your next episode or project No server uploads. No account to create. Everything runs locally with your own API key. Key Features - Multi-AI Support: Choose from Google Gemini (free tier available), Anthropic Claude, or OpenAI - Smart Topic Classification: Emails sorted into customizable topics with color-coded chips - Country & Language Detection: See sender's likely country and language for geographic diversity - Episode Planner: Pick random, topic-diverse questions for balanced podcast episodes - Episode History: Save episodes locally, export and import as JSON for backup - Date Range Filtering: Classify only the emails you need - Gmail-Native Design: Sits in Chrome's side panel, matches Gmail's look and feel - Privacy-First: No servers, no tracking, no data collection — your inbox stays yours Who Is TopicBox For? - Podcasters organizing listener questions by topic - Radio and show hosts curating audience mail - Content creators mining inboxes for trends and ideas - Newsletter writers categorizing reader feedback Get started in under a minute. Install, open Gmail, enter your API key, and classify. TopicBox is free and open source. Your data never leaves your browser. Support: [email protected]