SMTP Sender

SMTP Sender is a simple-to-use Java-based application designed to gives you the possibility to quickly send email messages from the desktop. It doesn't come equipped with complicated options or configuration parameters, making it accessible to all types of users.
Before proceeding any further, you should know that the app hasn't been updated for a long time, and you might experience some compatibility issues with later Windows versions.

No setup necessary, besides Java

As long as you have Java installed on your PC, you don't need to set up anything else. This means means that you can save the program files in any part of the hard disk or on a removable storage unit, and just click the executable Jar to launch SMTP Sender. More importantly, it doesn't modify Windows registry entries, unlike most installers.

Plain and simple interface

The GUI is as minimalistic as possible and has a rather rudimentary look, which makes SMTP Sender seem like an unfinished project. You can enter the receiver's email address, a subject and the text message, and then click a button to send it. This action triggers the app to show a smaller panel, where it asks for the sender's mail server (IMAP), email address and password.

Evaluation and conclusion

During our tests, the utility failed to send messages, although it didn't indicate any error messages. Actually, it didn't show any kind of notifications after we attempted to send the emails, to tell us whether it was a success or failure.
It didn't put a strain on the overall performance of the PC, using low CPU and RAM. However, due to its small set of features as well as functionality issues, you should look for a more reliable desktop client for sending email messages.