Xuheki Webmail is an IMAP protocol mail client that can be read from any web browser, that is, it is a webmail, as its name indicates.
Therefore, with Xuheki Webmail you can access your mail from any browser that has Internet. Xuheki Webmail allows you to work with MIME: emails written in HTML, attach files to emails, apply encodings, and so on. It also allows printing, associating them to the context menu, classifying emails in different folders, and so on.
Xuheki Webmail is a GNU GPL license program, that is, free.
You can free download Xuheki Webmail 32, 64 bit and safe install the latest trial or new full version for Windows 10 from the official site.