Dan Shipper launches Kora: a $15/month AI chief of staff for your email that filters, drafts, and briefs
Jun 26, 2025 with Dan Shipper
Key Points
- Dan Shipper launches Kora, an AI email assistant priced at $15/month that filters messages, auto-drafts replies based on 1,000 historical emails, and delivers twice-daily briefings.
- Kora exited six-month beta with 2,500 to 3,000 active users and bundles into Every's $20/month subscription alongside content automation and file organization tools.
- Shipper argues startups can deploy expensive inference-per-email filtering that Gmail cannot economically scale across billions of accounts, giving smaller paid services a structural advantage as model costs fall.
Summary
Dan Shipper has publicly launched Kora, an AI-powered email management product priced at $15 per month, positioning it as a scalable alternative to a human chief of staff or executive assistant. Kora connects to Gmail, screens incoming messages for urgency, auto-archives low-priority email, pre-drafts responses, and delivers twice-daily briefings summarizing what requires attention but not a reply. Shipper claims the product can compress what would be three hours of inbox work into roughly 30 seconds of scrolling.
Kora entered public availability after approximately six months in beta, where it accumulated between 2,500 and 3,000 active users. It is also bundled into Every's broader subscription at $20 per month, which includes Kora alongside Spiral (content automation), Sparkle (file organization), and Every's editorial content.
On voice matching, Kora analyzes roughly 1,000 historical emails during onboarding to extract behavioral patterns — how a user responds to pitch emails, what tone they use, what they typically decline — and builds response procedures from that data. The approach is designed to reduce the generic LLM tone problem that makes AI-drafted email feel impersonal.
Shipper's core competitive argument centers on incumbents' inability to rebuild from scratch. Gmail's AI features remain weak, he contends, not because Google lacks AI capability but because retrofitting a new paradigm onto a scaled product with hundreds of millions of users and entrenched engineering practices is structurally difficult. Kora's vibe-based filtering — using LLM inference to catch manipulative outbound sales emails that mimic warm introductions or fake reply threads — is something Shipper argues Google cannot economically deploy at full scale today, given the inference cost per email across billions of accounts. Startups with a smaller, paying user base can absorb that cost now, while model inference prices continue to fall.
Kora currently sits on top of Gmail and Superhuman, with Outlook and IMAP/POP support planned. Shipper has ruled out building a proprietary email delivery layer, citing the complexity of spam deliverability as a distraction from the higher-value intelligence layer above it. The longer-term vision is a full email client operated through Kora.
The team building Kora is lean. Kieran Classen serves as GM and is described as deeply technical, currently running 15 Claude Code instances simultaneously. A recent YouTube video featuring his agent workflow approach reached 50,000 views within one week. A single additional engineer named Nate rounds out the core product team. Brandon Gell leads studio operations and Lucas Crespo handles creative. Shipper describes their internal methodology as "compounding engineering" — structuring each build so subsequent features become progressively easier to ship.