mail-deduplicate ☆
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Description:
CLI to deduplicate mails from mail boxes
Type: Formula  |  Latest Version: 8.1.2@2  |  Tracked Since: Dec 6, 2025
Links: Homepage  |  formulae.brew.sh
Category: Productivity
Tags: email deduplication cli mbox maildir
Install: brew install mail-deduplicate
About:
mail-deduplicate is a command-line tool designed to efficiently identify and remove duplicate emails from mbox or Maildir archives. It uses advanced hashing algorithms to compare messages based on headers and content, ensuring data integrity while reclaiming storage space. This utility is essential for maintaining clean and optimized email archives.
Key Features:
  • Supports mbox and Maildir formats
  • Configurable duplicate detection strategies
  • Safe dry-run mode for testing
  • Detailed reporting on duplicate findings
Use Cases:
  • Cleaning up large, accumulated email archives
  • Merging multiple mailboxes without introducing duplicates
  • Preparing email data for archival or analysis
Alternatives:
  • fdupes – Generic file deduplicator; unaware of email structure
  • mu – Full email search/management suite; deduplication is a secondary feature
Version History
Detected Version Rev Change Commit
Jan 10, 2026 5:32pm 2 REVISION_ONLY 07faa02f
Dec 6, 2025 1:52am 1 VERSION_BUMP e2226df1
Dec 2, 2025 8:05pm 0 VERSION_BUMP af479672
Dec 1, 2025 2:13pm 0 VERSION_BUMP 5364209a
Nov 27, 2025 2:07pm 0 VERSION_BUMP 177dca72
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