Exim
Exim is a mail transfer agent that is license-free, and that is known for high degrees of flexibility and extensive configurability. The first version of Exim was written in 1995 and follows the design model set forth by earlier versions of Sendmail. Since the version 4 release, no security issues have been found with the Exim system.
Blackberry
This is the ubiquitous business sidekick mobile device. Originally released in 1999, the BlackBerry has gone on to change the way that many people do business. Essentially, it is an email client, with multiple capabilities including, but not limited to, the transmission and receipt of electronic messaging, telephone, GPS, Web access, Bluetooth, and WiFi.
Web Mail
Web mail, or web-based email, is an email system that is intended to be accessed through internet browsers on the world wide web.
Beginning with the enormous early success of Hotmail, web mail has gone on to be the primary provider of email addresses on the internet. Due in large part to its advantages over traditional mail, the success of Gmail, Yahoo. Mail and Microsoft Live Hotmail continues to expand. A primary advantage over traditional mail is the ability of a user to access email from anywhere in the world with an Internet connection.
