Letterboxx: Newsletter Reader

Your inbox isn’t a library. Letterboxx is.

Your inbox is where newsletters arrive. It shouldn’t be where they live. Letterboxx is a dedicated Mac app for reading, organizing, highlighting, and searching email newsletters. Connect Gmail, iCloud, Outlook, DreamHost, or any IMAP account and automatically build a clean reading library without moving or deleting your original messages. Whether you’re catching up on your favorite writers, saving ideas for later, or searching years of archived newsletters, Letterboxx gives newsletters the dedicated home they deserve.