I have uploaded a youtube video and marked it as private.
Now I want to share it with someone. I have tried to share it a few times, but they have not received any email notification.
What is the proper way of sharing the video?
Here's what Youtube says for sharing private videos. So, if you're sending the email notifications the way the steps say, then like one of the other answers says, maybe your friends need to add email@example.com to their email address book.
Have you read this information from the YouTube site?
I would imagine that the email has been blocked as spam.
Getting Started: Sharing videos
There are many options for sharing a video you've found on YouTube. Here are a few:
Having trouble sharing a videos?
If your friends haven't received the YouTube videos you've shared with them, please ask them to check their spam folder to see if the emails were filtered there. Adding firstname.lastname@example.org to their address book or filter exception list may help avoid this problem in the future. You may also want to confirm that you're entering the right email addresses when you share videos.