'Spam Condome' is a POP3 proxy screening incoming emails by the use of a white and a black list, different keywords, content checks and free definable filters all written in the Perl language. Against messages of originators detected as not wanted several actions may be configured such as: o Email deletion o Email identification as spam by keywords in order to allow storage, for example, in Outlook in a separate folder o Email downloading and deletion therafter without the program noticing Thus no email will be lost.