I used to have a package called nautilus-sendto installed in my Fedora Gnome. It enables a right-click-menu entry to send a file (or selection of files) as email. In fact, it just attaches the selected files to a new email draft.
Suddenly, I am missing the function. Anyone can confirm that this extension project has been abandoned? Are there any replacements you know of? Such basic function better be part of Gnome.