We are active in reducing spam as much as possible. Our mail server implements different anti spam measures. The server uses Bayesian filtering, Spam Assassin, content filtering, RBLs (remote Black Lists where messages from spam friendly mail servers are rejected), static filters based on regular expressions. If these anti spam defenses are not enough, you can always create your own personal rules and black list filters. Even a simple rule in your Webmail to reject all html messages will reduce spam by 99%. You can also use response/challenge features. You can use white list features where mail from trusted senders only are accepted or if you are technically inclined, create your own regex (regular expression) rules.

It is possible to reach almost 100% spam free messages if you want to have very strict filtering.