I've been using WordPress for a few months, and have upgraded to the current version. Ever since I started using it, I've never once gotten a comment in email unless it's a NEW comment, so I need to moderate it. After I moderate this person's comment, say Jane Doe, then I never seen another comment by Jane Doe in email again, even if she's commenting regularly.
This is really frustrating, because I miss comments that were made to posts I did a few weeks ago, and I end up having to literally go through EVERY SINGLE POST to see if there is anything new. It's a little ridiculous.
In the "settings" page, under "discussions", I have the box checked that says, "Email me whenever anyone posts a comment". It's always been like that.
My blog is http://www.grassdirtcorn.com
I have another blog at http://www.hollie.us
BOTH blogs have the same problem. I've never gotten a comment in email for either of them, unless it's a new user.