Letterboxx: Newsletter Reader

Separate newsletters from mail

Only for Mac

Free · In‑App Purchases

Mac

Letterboxx is for the newsletters you signed up for but are buried in your email inbox. Give them their own calm, organized home on your Mac outside of your email inbox. A better home for your newsletters. You subscribed because you _wanted_ to read them. The essays. The news roundups. The research. The product updates. The local news. The niche publications. Interesting things from interesting people. Then they arrived alongside everything else in your inbox that needed a reply, a decision, or your attention — and became more email to deal with. Letterboxx gives them somewhere better to go. Letterboxx is a dedicated Mac app for reading and organizing email newsletters. Connect the email account you already use, choose the folders where your newsletters arrive, and Letterboxx makes local copies for a calm, organized reading library on your Mac. Your regular email stays where it is. Your regular email app keeps doing its job. Letterboxx becomes the place you go to read. YOUR INBOX ISN’T A LIBRARY. LETTERBOXX IS. Email was designed for communication. Letterboxx is designed for the good stuff that happens to arrive by email but deserves more than a quick scan between messages. • BUILD YOUR OWN LIBRARY Create Letterboxxes for whatever you’re into — technology, investing, design, books, local news, research, hobbies, shopping, favorite writers, or that wonderfully specific subject you somehow ended up subscribing to six newsletters about. • LET THE MAIL SORT ITSELF Auto-Delivery puts recurring newsletters into the right Letterboxx automatically using rules based on sender, recipient, subject, content, and other message details. • READ THE WRITING, NOT THE CLUTTER Clean View reduces ads, trackers, embeds, and other distractions so there’s less between you and the thing you came to read. • HIGHLIGHT THE GOOD PARTS Highlight sentences, ideas, quotes, recommendations, recipes, or anything else worth remembering in familiar highlighter colors. Your highlights stay with the newsletter so you can find them again. • ACTUALLY FIND WHAT YOU SAVED FOR LATER Unread status, favorites, reminders, quick filters, highlights, and search help keep “I’ll read this later” from becoming “Where did that thing go?” • UNSUBSCRIBE WITHOUT THE SCAVENGER HUNT When Letterboxx detects an unsubscribe link, it helps you get there without hunting through the tiny print at the bottom of a newsletter. • FEEL AT HOME ON YOUR MAC Letterboxx is built for macOS, with a familiar sidebar, focused reading pane, keyboard shortcuts, menu commands, swipe actions, themes, native-style controls, and the little details that make a Mac app feel like a Mac app. HOW IT WORKS 1. Connect one or more supported email accounts. 2. Choose the folders where your newsletters arrive. 3. Letterboxx makes local copies for your reading library. 4. Read, organize, highlight, favorite, search, set reminders, and come back whenever you want. 5. Keep using your regular email app for everything else. Letterboxx isn’t trying to replace your email app. There’s no composing, replying, forwarding, or pressure to reach inbox zero. Use the email account you already have, or give newsletters their own dedicated address if you want to completely separate your reading life from your inbox. PRIVATE BY DESIGN Your Letterboxx library lives on your Mac. There are no ads in Letterboxx. No social network. No public profile. No business model built around selling what you read or what you’re interested in. Your original messages stay in your connected mail account during normal use. Read-status syncing is under your control. Letterboxx only removes an original message from the server when you choose to delete it and then empty Letterboxx Trash. Some of the best things arriving by email aren’t really email at all. They’re writing from people you decided were worth hearing from. Letterboxx gives all of it the quiet place it deserves — and gives you a better chance of actually reading it. Take your inbox back. Keep the newsletters. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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Letterboxx 1.0.18 makes building your newsletter Library clearer and more reliable. - Clearer progress and more dependable newsletter history imports. - Easier account recovery for Gmail and Outlook, with more reliable Outlook read/unread updates. - Smoother bulk cleanup with Undo, plus stability improvements.

The developer, Letterboxx Software LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

    The following data may be collected but it is not linked to your identity:

    • Identifiers
    • Usage Data

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer indicated that this app supports the following accessibility features. Learn More

  • Supported Features

    • Dark Interface

    • Sufficient Contrast

Seller
Letterboxx Software LLC
Size
41 MB
Category
Productivity
Compatibility
Requires macOS 15.6 or later.
  • Mac
    Requires macOS 15.6 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
Copyright
© 2026 Letterboxx Software LLC