What I want in OS X Mavericks is what Apple doesn’t give to Mac users in Notification Center. The option to review and respond instantly to an email message.
Fortunately for the email impaired among us, there’s a Mac add-on that’s much like having Mail within a pop up window that only pops up when there’s incoming email. It’s called Herald and it’s free.
See? That looks just like a mini-email app, complete with From:, To:, Subject and a few paragraphs of the email text. What’s that on the bottom of the notification pop up window?
It’s the Quick Action Toolbar which lets you read, reply, delete and more without switching over to Mail. The whole shebang is customizable, too. Change the window size, color style, font, screen position, and even transparency right from the Preferences.
Preferences is where Herald shines. Not only can you adjust Herald’s notification window look and feel, but you control Herald’s action on a per mailbox basis, determine which email account gets notifications, and much more.
Herald is a plugin for Mail and while it works flawlessly, every time Apple puts out a new version of Mail then Herald needs to be updated, too. That happens to Spam Sieve, Send Later, and other Mail plugins, too. The fix is a free utility called MailPluginFix which alters the plugin version to work with Mail until an update arrives.