One of the most performing ways to convert Thunderbird emails into HTML format for light viewing is EmailSoftwares Thunderbird to HTML Converter. This utility exports multiple Thunderbird emails into HTML format, keeping attachments, folder hierarchy, and meta-properties in mind. It automatically identifies Thunderbird profile data and allows the manual selection of mailboxes. The interface is easy to use and facilitates conversion without going through all the trouble of installing the Thunderbird program. You can convert conversions in one shot in a few clicks since it supports all windows and admires batch mode. A free demo version is available to check the convertible items before purchasing. Try it yourself to enjoy a hassle-free Thunderbird to HTML conversion.