Email attachments are the bane of a smooth user experience for grandma.
She probably has a web mail account, and uses a browser to access it. She's going to receive all kinds of weird attachments from friends, and she will want them all to just work. There are Power Point slideshows, Word documents, spreadsheet files, movies, embedded images, links to images on mailing lists, flash animations, PDFs, MIDIs, and more. Any of these can be in several layers of forwarded messages, or stuffed into an
To get as much of that to work as possible, need lots of software. Libre Office to handle the Power Point, doc, and spreadsheet files. But that's not enough, need codecs so Libre Office can play whatever video or audio is embedded in the Power Point. Got to have Thunderbird for the
Finally, a weak point of Firefox, and I think all browsers, is association. Firefox is quite poor at remembering which program to use to handle a particular file type. Often the user is forced to browse around in the file system. Grandma is not going to like having to slog through