While using openerp 7 there were options Settings->Users->Receive Messages by Email

"Incoming Emails and Discussions", "Never", "Incoming Emails Only", "All Messages"

But in odoo 8 there are only two options.
"All messages" , "Never"

When I setup to "Never" then "Send Message" didn't work for users even though I deliberately selected in "Sales"->"Lead"->"Send a Message" in "Recipients" field.

If I selected "all messages" then it acted as  "All Messages" in openerp 7, sending every email, for example if I add/change salesperson in lead. Is there any way I can have options as in openerp 7 in this new odoo?

Thanks,