My ISP has recently changed their e-mail filter system. To make maximum use of the new system I have been looking carefully at the headers I receive with my e-mail messages. I always use as my e-mail address [log in to unmask] By saying to the filter "deliver [log in to unmask] but delete everything else" I can loose a great deal of spam. I subscribe to a number of e-mail lists, which seem to use the headers differently. The e-mails I get from them have Envelope-to: [log in to unmask] I could include [log in to unmask] in the "deliver" filter but that would also let through a quantity of unwanted mail. I never use the suffix .clara.co.uk, so how is it that these e-mail lists can change from one form to the other? I would welcome information on how they do this and why. Regards Tony Do you want to signoff PCSOFT or just change to Digest mode - visit our web site: http://freepctech.com/pcsoft.shtml