Hello Anton, 

1. Yes, nothing is unchecked
2. I just did it again to be sure

I have this notification on the site

I also checked via my smtp server the mail does not leave, so I can not even supsect that it is lost somewhere, besides, all the other notifications of the same type work properly.

I understand why you can not imagine, but it happens ...
I guess for the same reason I should not suspect that I have misapplied the patch as it works in the site notification, I understand?