Letterboxx Press FAQ.

Letterboxx is an email newsletter reader and Mac app for reading, organizing, highlighting, searching, and keeping email newsletters. It turns newsletter copies from the folders you choose into a local reading library on your Mac.

No. Letterboxx is not a full email client. Your email app still handles everyday mail, sending, replies, forwarding, account settings, receipts, alerts, and work threads. Letterboxx is for the newsletters that become reading.

No. Keep your email client. Letterboxx works beside it by connecting to selected newsletter folders, downloading local copies for reading, and leaving normal email communication to your mail app.

Newsletters arrive through email, but good newsletters often behave more like essays, briefings, analysis, and issues worth keeping. Letterboxx gives that reading its own home instead of asking your inbox to solve a reading problem.

The public Letterboxx app is currently a Mac app. Letterboxx is not positioned as an iPhone or iPad newsletter reader. Yet. 😉

Letterboxx can connect to Gmail and IMAP accounts, including providers such as iCloud, Outlook, DreamHost, and custom mail servers when IMAP is available.

No. Letterboxx connects directly to your email account using IMAP. It downloads local copies of newsletters into a dedicated reading library on your Mac while leaving the original messages on your mail server. After you connect an account or choose a folder, Letterboxx retrieves newsletters from that selected source and continues checking selected folders for new issues. Original messages are only removed from the mail server if you explicitly delete them.

No. Normal import uses a read-safe fetch. Read-status syncing is configurable per account: “Choose whether this account’s read/unread state stays local, is sent back to the mail server, or also refreshes recent read status from the server during checks.” The available options are Sync with mail server, Send to mail server, and None.

Letterboxx is local-first. It keeps newsletter copies, highlights, Letterboxxes, rules, and reading state in a Mac reading library, while original messages remain on the mail server unless you delete them.

No. Letterboxx is designed around a local Mac library rather than a web account where your reading life lives. The app stores local newsletter copies on your Mac, and your email provider still hosts the original messages unless you delete them.

Yes. Auto-Delivery rules can send recurring newsletters into the Letterboxxes where they belong, while you can still organize messages manually when you want control.

Clean View gives newsletters a calmer reading layout when the original HTML gets in the way. It can remove obtrusive ads, tracking features, embeds, and visual noise while keeping the original available.

Yes. You can select useful passages, save highlights in familiar colors, and return to newsletters with highlights later.

Yes. Letterboxx can search the newsletter copies in your local library, making half-remembered ideas easier to find again.

Yes. Letterboxx offers a 14-day free trial before you choose a monthly or annual plan.

Letterboxx is available on the Mac App Store.

You can send questions to support@letterboxxsoftware.com.