SnapShot (Version: 1.0.4 as of this post) is a lightweight screen shot program or screen capture tool. It can take full screen, active window or rectangular area screen shots. By default it will only present a preview of the screenshot which the user can manually save. Using its preferences (Capture —> Preferences —> Save & Edit tab) auto save can be enabled with an option to not only choose the destination location but also a prefix for the file name. SnapShot is capable of saving files in BMP, GIF, JPG (JPEG), PCX, PNG, PSD or TIFF formats. Also from the same Preferences tab the output JPG quality can be configured. A path to an external image editor can be saved in the preferences for SnapShot to send or open the capture using it or optionally send the screen shot to the system clipboard.
SnapShot also features email and FTP to automatically send or upload a screen shot. Use the Edit menu to configure the email SMTP server and even choose the subject and text of the email and separately the FTP details.
SnapShot supports multiple monitors and supports setting a delay for taking screen shots. It should run on all Windows versions dating back to Windows 98.