Notes about the IHTML file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The IHTML file type is primarily associated with 'Inline HyperText Markup Language' by Inline Internet Systems, Inc.. iHTML is a server side scripting language for the Internet which allows the creation of customized interactive web sites.