Mailtro

Mailtro is a lightweight software application whose purpose is to help you carry out SMTP tests in order to verify the security of your servers. It can be deployed on all Windows versions out there.

You can take advantage of the tool’s portable status and drop it on pen drives or other removable devices so you can carry it with you everywhere you go. Plus, you can run it without having to apply administrative privileges directly from the storage device.

It’s easy to get access to its GUI because you only need to double-click on the executable file. No installation process is needed. It does not leave entries in your Windows registry and generate additional configuration items so you may get rid of it by deleting the files that you have downloaded from the Internet.

Mailtro reveals a clutter-free layout that embeds all configuration settings within a single window. You cannot make use a help manual to find out extra details about how the program works so you need to experiment a little bit with the dedicated options.

The program offers you the possibility to configure an SMTP server by providing information about the name of the server and port number. You are allowed to give details about the address of the sender and receiver, input the subject, as well as insert attachments.

Other important configuration settings worth being mentioned enable you to require authentication (you can manually enter the username and password), enable TLS options, adjust the encoding mode by selecting from different preset profiles from a drop-down list, as well as manually type in the text message that you want to send or paste the information from the clipboard.

A log is integrated in the main window for helping you check out details about the testing process and detect possible errors.

To sum things up, Mailtro comes packed with several simple features for helping you send test emails. It can be configured by rookies and professionals alike.