Hi! Someone subscribed as a guest with an invalid email and I keep getting a non delivery email notification each time. How can I remove those subscribers?
I thought that the possibility of having guests subscribing to comments on my site was turned off, but I found out I had to change a setting in both forms, hopefully it won't happen again, but I still need to erase the existing ones.
I don't want to buy an add on just to do that. I am ok about erasing all comment subscribers if that's the case. How can I do it? Thanks!

