Hi mr.zatan
just checked email share on my local installation, and everything seems to work just fine.
To share via email, anyway, you have to specify some sort of email client to your browser, so it know how to send email
Modern browser find available clients automatically, and prompts you modal to select your preferred method to send mails.
Here a screen of my installation (I configured chrome to open gmail as response to a mailto: link)
https://screencast.com/t/b7IAZsO8X
https://screencast.com/t/B3DUWX0KOE
Do you have any email client installed/configured on device used to visit site?
Let me know!
Have a nice day
