Postmaster

About Postmaster

Your inbox has been out of control for years. Time to change that. Postmaster is a local-first inbox cleaning machine for Mac. Not a mail client. Not another productivity app trying to replace your existing workflow. A purpose-built tool for the one job every email client refuses to do well: getting your inbox from chaos to zero — and keeping it there. Whether you're staring down 40,000 unread messages or drowning in newsletter sludge, Postmaster gives you the tools to act at any scale — one message at a time, or 18,000 at once. Every other mail app is built to help you read email. Postmaster is built to help you eliminate it. They hand you a list and a delete key. They don't tell you that 847 of your emails came from the same ESP. They don't notice that login codes from 2019 are still sitting in your inbox. They don't surface that a "PayPal" email came from a domain registered last Thursday. And they definitely don't let you act on 12,000 messages with a single, reviewable, undoable operation. Postmaster does — with keyboard-driven triage, structural views by sender, recipient, thread, age, attachment, and risk, batched IMAP bulk actions, a Scope Ladder that bridges single-message triage to mailbox-scale cleanup, deterministic Cohort Plow cards, full SPF/DKIM/DMARC security analysis, on-device PII and secret scanning, a Smart Rules Engine, cleanup recipes, RFC 8058 one-click unsubscribe, PII-redacted AI summaries, calendar-aware RSVP handling, five export formats, and every IMAP provider working simultaneously under a unified view. Privacy is the baseline, not a feature. No cloud sync — mail metadata lives in a local SQLite database on your Mac. No body storage — message bodies are fetched on demand and never persisted. No analytics. Encrypted credentials via macOS safeStorage. AI is opt-in and redacted, so cloud models never see raw sender addresses or attachment filenames. Postmaster is for the person with 40,000 unread messages and a genuine desire to fix it — not trying to be your email client, but trying to make your email manageable. One Mac app. Every account. Total control. Requires macOS 26 (Tahoe) or later. Feature list: - ⚡ Keyboard-driven triage with mixed-action review queue and batch apply - 🗂 Structural views by sender, recipient, thread, age, attachment, risk, and subscriptions - 🚿 Batched IMAP bulk actions with protected-mail layer and undoable operation journal - 📋 Scope Ladder — escalate from one message to sender, domain, or list with live counts and samples - 🎯 Cohort Plow Mode — deterministic cleanup cards, one decision per category - 🔒 Full SPF/DKIM/DMARC analysis, lookalike domain detection, brand impersonation, reply-to mismatch, DNS blacklist, disposable domain flagging - 🔐 On-device PII and secret scanning with a dedicated Sensitive Data folder - 🧹 Smart Rules Engine — auto-move on arrival, AND/OR conditions, cross-account actions - 🗑️ Cleanup Recipes — pre-built campaigns with full preview before execution - 📤 RFC 8058 one-click unsubscribe via parsed List-Unsubscribe headers - 🤖 PII-redacted AI summaries (Ollama local or Glaze cloud), action items to Apple Reminders - 📅 Calendar-aware ICS parsing with inline RSVP drafting - 📁 Export to Markdown, PDF, EML, Mbox, or Apple Notes - 🔗 Every IMAP provider — Gmail, iCloud, Outlook, Fastmail, Proton Bridge, self-hosted, unified view