Collect newsletters outside your inbox, route them into Letterboxxes, read them in Clean View, and keep the good parts easy to find.
A dedicated Mac app for the things you actually meant to read.
Trim trackers, ads, embeds, and clutter before they reach your eyes.
Save the good bits in familiar colors, right where you found them.
Letterboxxes work like folders, keeping subscriptions stored, sorted, and out of your inbox.
Reveal sender, source, composition, and Clean View details without leaving the reader.
Simple Auto-Delivery rules send recurring newsletters where they belong.
Adjust type, density, badges, dates, and status icons until it feels right.
Encrypted backups protect newsletters, Letterboxxes, rules, highlights, and settings.
Light, dark, e-ink, newspaper, Kitty Cat, and more. Because this is a Mac app.
Letterboxxes are your custom newsletter folders inside Letterboxx. Create focused spaces for each topic, then file newsletters manually or route them automatically with Auto-Delivery.
Focused Organization
Separate your reading stream into intentional Letterboxxes so your inbox stays clean and your best newsletters stay easy to find.
Quick Access + Simple Setup
Letterboxxes live directly in the sidebar and can be created on demand, so setup and organization stay one click away.
Newsletters should feel like reading, not like loading a miniature website full of scripts, embeds, and tracking pixels. Clean View gives you a calmer reader with visible privacy reporting.
Cleaner Reading
Clean View removes common newsletter clutter and keeps a local audit of what was taken out so the reader stays fast, quiet, and explainable.
Privacy Report
The Clean View settings pane surfaces cumulative totals and attribution so privacy protection feels transparent instead of mysterious.
When a newsletter looks different than expected, Letterboxx can explain the message, Clean View changes, delivery state, and source details right beside the reading flow.
Message Diagnostics
Message Diagnostics now flips into the reader pane, so you can understand a selected newsletter without opening a separate utility window.
Activity Center
Activity Center gives important app events a dedicated place, so import, routing, highlight, and maintenance details stay understandable.
Letterboxx is still local-first, but it gives you practical controls for routing newsletters, importing copies from mail accounts, choosing read-status behavior, and protecting your library.
Auto-Delivery
Auto-Delivery routes new arrivals into the right Letterboxx using ordered rules you control.
Accounts + Sync
Connect Gmail or IMAP accounts, import newsletter copies from selected folders, and see what iCloud-backed continuity can do when available.
Backup + Restore
Create encrypted backups for newsletters, Letterboxxes, Auto-Delivery, highlights, reminders, and settings.
Tune Letterboxx to your reading style with theme controls, typography settings, and calmer visual defaults.
Visual Theme
Switch themes instantly and keep your reading experience aligned with your environment and focus level.
Newsletter List
Adjust the newsletter list so it surfaces exactly the information you want at a glance.
Save important passages in any newsletter, keep them attached to that message, and use View Highlights to jump through them later.
Mark what's important
Select text in the reader and save it as a highlight without leaving the newsletter.
Persistent Recall
The Highlighted filter shows newsletters that contain saved highlights, so the ideas you marked are easy to find again.
