Hi
All my LMS registeration (NOTIFICATION) mails deliver to Bulk foldr in yahoo .
unfortunately most of my website users have yahoo mail and it can cause to I lose most of my website users .
Please introduce me a good solution to avoid this event .

You should ask your site provider if your domain or server address is included in some public blacklist.
If it is so you have to ask to be removed from the blacklist.
Otherwise, the only solution is to change provider, domain or email address to send notifications.