There are numerous problems with anonymizing remailers none of which have anything to do with Tor whatsoever. The two main problems are that there are not enoug

There are numerous problems with anonymizing remailers none of which have anything to do with Tor whatsoever. The two main problems are that there are not enough nodes (between three and six running at any particular time) and their protocol is overly complicated and implementations are bug-ridden, leading to mistakes that leak information.