Download of MailCue 2.0.4 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This Mac application is an intellectual property of BlueCrestStudios.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. The software lies within Communication Tools, more precisely E-mail. The most popular versions of the application are 2.0 and 1.0. The bundle identifier for this app is com.bluecreststudios.MailCue1.
From the developer:
MailCue is the must have mail notifier for OS X. MailCue works with any IMAP provider, sitting in your menubar notifying you of incoming mail.
You may want to check out more software for Mac, such as Zimbra Toaster, PageSender or EEAO, which might be related to MailCue.