Mailplane

Turn on the "Do not disturb" mode when you like to work in peace, without new mail or chat notifications. You find the menu item in the Mailplane menu.

If you like to control the mode using AppleScript, you now can:

Small example script:

  tell application "Mailplane"
   set doNotDisturb to true
  end tell
 

How to use iCal to control the "Do not disturb" mode.