When sharing a link, can user select what language should be used for mail content and link page?
I don't think this is possible.
Can you describe your use case? ( What you want to achieve)
Users normally use owncloud in Turkish and when sharing a file and send email to reciever it is in Turkish.
But sometimes users need to share and send mail to non Turkish speakers. So ıt should be multilingual at same time.Turkish and English based on user needs. Any suggestion?
Was it too hard
I wouldn't say its too hard. There is just no feature that would do this at the moment. Not that I know of.
You could change the language to English, so it would be universal.