User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; pt-BR; rv:1.8.1.9) Gecko/20071025 Firefox/2.0.0.9 Build Identifier: 2.0b1 Creating rules for incoming message is a limited tasks in many programs... It could be better in a Mozilla product as Thunderbird Suggestions 1- Use of wildcard (*) to substitute chars ex: V**gr* (would prevent viagra and V|agra and vi@gr@ and V|agr@). 2- Use of regexp ex: /v..gr./i would match all those examples above as . means "any character except new lines" 3- The creation of the "Stop processing rules" action that exists in Microsoft Outlook Express (it would prevent Thunderbird from doing unnecessary processment). Once this action is performed T.B would stop applying other filters to that message. Reproducible: Always Steps to Reproduce: 1. write a filter rule like "subject" and "contains" and "b*ll sh*t" 2. send a message to yourself with the subtitle "****" Actual Results: the filter doesn't catch so the actions configured will not be applied. Expected Results: the actions configured in the rule should apply to the message if a wildcard support were added each (*) would match any character.