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Mail Act-On is the powerful enhancement to Apple's Mail Application that puts organization at your fingertips. Use Mail Act-On to create rules to perform action on messages by responding to simple keystrokes. Create Outbox rules to automatically add headers and set the archive mailboxes of sent mail. Mail Act-On is the indispensable tool for anyone who needs to manage their mail more efficiently.

What's New

Version 3.2.1:
  • [Fix] Outbox rule not saving when setting delivery account.
  • [Fix] Issue with messages not sending if affected by outbox rule that sets delivery account.
  • [Fix] Dutch and Danish localization problems in Preferences
  • [Fix] Problems with layout in rule editor for outbox rules.
  • [Fix] MAO may not respond to Act-On keys in some circumstances.


  • OS X 10.9 or later

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4 31


Current Version (3.x)


Downloads 25,416
Version Downloads 163
Type Internet / Email
License Shareware
Date 30 Sep 2015
Platform Intel 64 / OS X
Price $29.95
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