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pst

PSTmortem is a Python CLI that exports Microsoft Outlook OST/PST files to Thunderbird mbox or Dovecot Maildir. Designed for very large archives (tested 30 GB+) with low, constant memory. Features folder & date filtering, attachment size limits, resumable Maildir exports, and graceful Ctrl-C.

Cross-platform desktop app that exports email from Thunderbird and Apple Mail to EML, Outlook MSG, or PST. Works entirely offline — no credentials or internet required. Built with .NET 8 and Avalonia UI.

retrieve calendar entries from outlook via EWS or local OST/PST (and import into emacs)

A node package to allow developers to swap tokens in a VERY fast way