POP PeeperPOP Peeper 
POP Peeper (POPPeeper.exe). Many notification options are available to indicate when a new email has arrived...
POP Peeper keeps you instantly informed whenever new email arrives across your POP3, IMAP, and webmail accounts, including Hotmail, Yahoo, Gmail, Excite, and Lycos. Designed as a fast and lightweight email checker for Windows, it streamlines your inbox with an easy interface and automatic imports from other mail clients. This secure email notification tool also lets you send messages directly without opening a full email client.
Highly configurable and ideal for productivity, POP Peeper offers flexible alert options—play sounds, show desktop notifications, open the main window, or trigger your default email client. You can control how often it checks for new mail and choose whether to download just headers, message content, or full messages. Beyond notifications, it now supports reading and sending emails, downloading attachments, and managing contact addresses.
POP Peeper stands out with wide account compatibility, portability from external drives, and plugin support for added functionality. While not as feature-rich as heavier email suites, it excels as a fast, customizable desktop mail alert system and remains a reliable choice for users seeking efficient multi-account monitoring.