POP Peeper is a program that emits alerts when receiving an email, both sound and visual. It allows controlling multiple accounts at a time, supporting POP3 and IMAP accounts but also Gmail, Yahoo, Hotmail, MSN, Livemail, Mail.com, MyWay, Excite, Lycos.com, Juno, RediffMail, and NetZero.
This client can also be used to send mail, and manage a single address book, so it is a good solution to unify all accounts, since it is usually common to have more than one provider, with the addition of alerts, Which can be customizable.
POP Peeper supports mail in HTML format, but can be configured to always receive plain text messages, even though the program has control of viruses and malicious scripts.
There are several options of alerts, being able to vary the type of notification according to certain filters, for example each account a different sound.
It can be run from a PenDrive or flash memory, with the advantage of being able to receive mail on any computer easily without having to configure anything.
This latest version presents some improvements, fixes some bugs, and among the highlights to note is the compatibility with .eml files.
POP Peeper 3.8.1 is the latest version, updated in November 2012, of this software that can be downloaded and used totally free. Works with Windows 95/98, ME, 2000, XP, 2003, Vista, 2008, 7 (32-bit and 64-bit).