Notes about the Z80 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 Z80 file type is primarily associated with 'Z80'. This file format, developed primarily by Gerton Lunter, should be able to be recognized by any of the Spectrum emulators.