When we were on JIRA cloud, there was a nifty "Notifications" page that used to show all the notifications when someone "mentioned" you in a ticket.
The server version doesn't have this feature. We get a ton of notification emails from JIRA for the tickets we watch. However I am interested in only those where I am "mentioned". So, I put a filter for words "mentioned you" in the subject line. So I cleanly filter out emails with subject such as "[JIRA] Prashant Samal mentioned you on WB-820 (JIRA)"
For a few cases it works. But I see that even if someone mentioned me by name in a comment, I just get an email with "[JIRA] (WB-234) summary text" in the subject. Why this inconsistency?