Mac Mail and ReplyWithHeaders

I’ve been using Microsoft Outlook 2011 on Mac OS X for a couple years and I finally decided I needed to give Mac Mail and iCal a try.  In Lion (Mac OS X 10.7), Mac Mail has added some great features, but one thing it is missing is including the headers of the original message when replying.  Here is an example of what Mac Mail shows:

On Jun 14, 2012, at 1:03 PM, Geoff Walker wrote:

Outlook shows this:

From: John Smith [] Sent: Thursday, June 14, 2012 12:41 AM
To: MyTeam
Subject: Yesterday’s meeting

I found an add-on that will modify Mac Mail to do the same thing.  Saptarshi Guha wrote ReplyWithHeaders, which is a bundle that can be added to Mac Mail to modify its behavior, and released the source on GitHub.  Here are the steps to use it if you have access to Xcode (the development tool for Mac OS X and iOS):

  1. Clone the ReplyWithHeaders repository by using the following command:
    git clone ReplyWithHeaders
  2. Quit out of the Mail app.
  3. Build the ReplyWithHeaders project in Xcode.  This will place the ReplyWithHeaders.mailbundle file in the right place, which is in ~/Library/Mail/Bundles directory.
  4. From a Terminal window, execute the following commands:
    defaults write EnableBundles -bool true
    defaults write BundleCompatibilityVersion 4
  5. Start the Console app to help you verify that the installation worked.  In the search bar in the upper right corner of the Console app type ‘Mail’.
  6. Restart the Mail app.
  7. In the Console app you should see the following lines:
    ReplyWithHeaders: Oh its a wonderful life
    Loaded ReplyWithHeaders

You can also find these instructions on the webpage for the bundle.  Pretty cool, huh?

4 thoughts on “Mac Mail and ReplyWithHeaders

  1. Dan

    HI David…..I can’t figure out how to contact anyone about the Mountain Lion update, but it has broken the REplyWithHeaders plugin.

    I’m not too techy, but did figure out out the first time. Still don’t understand why Apple does not offer this option.

    Anyway…reaching out to anyone who may have upgraded and figured this out and found a fix.


    Dan Jones

  2. David Potter Post author

    @Dan: I’ve been living with this as well for the last month since I installed Mountain Lion. I haven’t found a fix yet, but as soon as I do, I’ll post it here.

    I agree with you, by the way. All they’d have to do is do what they do with forwarded emails. Ugh!

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