Email filing for macOS

File email into the right matter.

Drag messages from Outlook, Apple Mail, or Finder. Maildrop turns them into named PDF records, keeps their attachments, and saves everything in the matter folder you choose.

Download Maildrop 0.9.40 Read the release notes

Version 0.9.40 · macOS 26.0 or later · Apple Silicon and Intel · Signed and notarised

How it works

Three decisions. The rest is routine.

Choose the destination, review the filename, then file. Maildrop deals with parsing, rendering, sequence numbers, attachments, and duplicate checks.

Choose a matter

Search by matter number, client, or description. Maildrop targets its Correspondence folder when one exists.

Drop and review

Drop one message or a batch. Check the direction, party, description, and PDF before anything is written.

File

Maildrop adds the email date and next sequence number, saves the record, and shows exactly where it went.

A useful record on disk.

Maildrop produces ordinary files with readable names. No proprietary archive and no cloud account are involved.

Messages without attachments are saved as a single PDF. Messages with attachments are kept together in a folder named after the email.

013529 - HALPERT PTY LTD/
└── Correspondence/
    └── 2026-08-09 01 Email from Smith re Hearing dates/
        ├── 2026-08-09 01 Email from Smith re Hearing dates.pdf
        └── hearing-directions.pdf

The details that make filing dependable.

Complete PDFs: Headers, recipients, timezone, Message-ID, inline images, and pagination are preserved. Remote images and tracking pixels are blocked.
Batch review: Mixed threads are ordered by date. Move through the queue by keyboard, remove unwanted rows, and preview any PDF with Space.
Duplicate checks: Maildrop detects repeat drops and searches the selected matter for the same Message-ID before filing another copy.
Recovery: Reveal completed filings in Finder or move the last filing to the Trash with Undo. Failed rows remain queued without repeating successful saves.
Matter suggestions: Optional on-device suggestions can shortlist a likely matter on supported Apple Silicon Macs. They are off by default and never choose for you.