I think my computer is randomly not syncing email correctly with Apple Mail, but it's only a problem when it wakes from sleep.

That issue is neither here nor there. What I'd like to do is write a script / something that will quit Apple Mail if it detects that the computer is going to sleep.

Ideally, there'd be a similar process to open Apple Mail upon waking from sleep, but that's less of an issue.

I tried looking for a system event library of some kind, but all I can find is fsevents (which I don't think has anything about sleep).



I suggest using a daemon like SleepWatcher. Once you’ve installed SleepWatcher (ref. the README included with it), you can run commands like the following.

/usr/local/sbin/sleepwatcher -s /path/to/sleepscript -w /path/to/wakeupscript

The script

osascript -e 'quit app "Mail"'

will quit Mail, and the script

open -a /Applications/Mail.app $1

will open it. You can save these as .sh files and reference them from sleepwatcher, but ensure you run chmod +x filename.sh on them before you try running them. Otherwise, OS X won’t recognize them as executable.

Now, you have two options for loading sleepwatcher: you can manually run it, you can configure a LaunchAgent to do so. I like the latter, so create a file in /Library/LaunchAgents/ named com.custom.mailfix.plist (the name is unimportant, but I recommend you keep the formatting, the “com” and the “plist”). The file’s contents should resemble the following.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
    <string>-s /path/to/sleepscript</string>
    <string>-w /path/to/wakescript</string>

As before, replace the script paths with paths to your shell scripts. To tell OS X to launch this agent at startup, run

sudo launchctl load -w /Library/LaunchAgents/com.custom.mailfix.plist
  • and then what? could you be bit more precise, not just a link. – Ruskes Mar 14 '15 at 2:57
  • 1
    I’ve edited my answer to be more specific. Sorry about that! – AstroPig7 Mar 14 '15 at 13:22

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