MailBarMailBar 
The latest version of MailBar is 1.3 on Mac Informer. It is a perfect match for E-mail in the Communication category.
MailBar is a lightweight and discreet app designed to help you manage your emails directly from your Mac's status bar. With MailBar, you can effortlessly monitor multiple email accounts, view new messages, and access your inbox with just a few clicks, all while keeping the app running in the background. The intuitive interface allows you to stay on top of your communications without interrupting your workflow.
With support for up to four different mailboxes, MailBar makes it easier than ever to check and organize your emails. Whether you're looking for unread messages or need to search for a specific email, the built-in search feature helps you find what you're looking for quickly. Plus, you can easily mark messages as read, reload them, or open them directly from the app, making email management more efficient than ever. Customize your experience with various notification sounds, color-coded mailboxes, and other personalized settings, ensuring MailBar fits seamlessly into your daily routine.
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