Free plan: 200 emails. Paid plans available after free trial. Subscription plans in USD. 2 months free when choosing an annual plan. Also available on Setapp with 10-250 monthly emails depending on selected plan.
Free: 10 credits (one-time). Monthly: $7/mo for 70 credits. Yearly: $65/yr for 600 credits.
Key features
Automatic draft generation for incoming emails
Personalized responses in your voice and style
Intelligent Snippets knowledge base
Mobile app integration for Android and iOS
Support for 100+ languages
Edit, regenerate or delete draft messages
Intelligent email filtering
Custom API key support
Draft generation for new emails
Contact-specific personalization settings
TYPE-FORMULA pipeline that extracts insight types (diagnostic, wisdom, contrarian, data-backed, framework, story) and applies viral structures
Knowledge Bank to store, browse, and reuse extracted insights
10+ viral formula structures including parallel repetition, conditional framework, and bridge analogy
Chrome extension for scheduling posts directly to Substack
Rich-text editor with HTML and plain text export
MCP integration for Claude and Cursor
Automatic article URL processing from published or draft posts
Priority processing for paid plan users
What makes it different
Works automatically 24/7 generating replies waiting for approval
Seamless native Gmail integration without copying between apps
Intelligently filters meaningful emails from newsletters and promotions
Google-verified security with limited data use compliance
Privacy-first: emails not stored and AI models not trained on your data
Designed specifically for Substack writers with formulas trained on viral patterns
Two-stage TYPE-FORMULA process instead of generic AI summarization
Knowledge Bank compounds over time as more articles are processed
From URL to scheduled post in minutes with no copy-paste needed
Ready to Send
Quick Viral Notes