I have been using TML and love the pending concept -- I get lots of spam and I want to be able to approve members or tell non-members this is a value of their membership.
However, about a week ago, I stopped being able to delete the pending users, and I get the oddest error message:
The e-mail could not be sent.
Possible reason: your host may have disabled the mail() function...
But I'm not sending an email and I'm not trying to do anything other than delete.