Working with large MBOX files can be frustrating: traditional mail clients slow to a crawl, indexing takes ages, and one wrong import can corrupt or duplicate messages. Whether handling archived mail from Thunderbird, Apple Mail, or Google Takeout, the right approach is to preview safely, search quickly, and export only what’s needed—without bloat. This guide explains how to open larg... https://bioneerslive.org/2025/08/open-large-mbox-files-on-windows-and-mac-lightweight-viewer-and-export-options/