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Quoting Headers and Signatures in

ReplyWithHeader [aka RWH] is an Apple Mail bundle/plugin that enables quoting of message header and automatic selection of signature while reply or fowward an email. RWH brings Outlook mail header capabilities into Apple Adds missing functionality of headers and signature into

ReplyWithHeader plugin is available for Mozilla Thunderbird and Postbox email client.

| Home page | Download RWH | Report Issues | Installation | FAQ | Changelogs |

Support RWH 💰

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  • Double click the file Install-or-Upgrade-or-Reenable.command from downloaded
RWH:: Mac OS X version: 10.X
RWH:: Mail Plugin: ReplyWithHeader
RWH:: X.X [Build XXXX.X]
RWH:: Installing ReplyWithHeader Mail plugin
RWH:: user 'name' is installing plugin
RWH:: Enabling plugin support in
RWH:: Domain is /Users/<username>/Library/Containers/
RWH:: Adding UUID <Respective UUID value>
RWH:: Installation complete
  Plugin installation completed, restart  
  • Restart

Report Issues

ReplyWithHeader uses GitHub’s integrated issue tracking system to record bugs and feature requests. If you want to raise an issue, please follow the recommendations bellow:

  • Before you log a bug, please search the issue tracker to see if someone has already reported the problem. If the issue doesn’t already exist, create a new issue.
  • Please provide as much information as possible with the issue report, we like to know the version of ReplyWithHeader that you are using.
  • If you need to paste code, or include a stack trace use Markdown ``` escapes before and after your text.


Jeevanandam M. (


  • Since v3.5 (from Sep 16, 2013), Jeevanandam M. have taken over the project to make more wonderful :)
  • Jason Schroth (jschroth) extended his helping hands towards maintaining ReplyWithHeader mail bundle from Aug 9th, 2012 to Sep 16, 2013
  • Saptarshi Guha (saptarshiguha) initially started ReplyWithHeader mail bundle development for Apple Mail Application on Oct 22nd, 2010. He handed over the project to Jason Schroth (jschroth)

Below is a short description of the external classes inside ReplyWithHeader:

  • MLog - Enhanced MLog classes for RWH
  • JRLPSwizzle - For method swizzle
  • Sparkle - Version Comparator classes


ReplyWithHeader plugin is released under MIT License

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