Go ask your lawyer - because it's complicated. http://www.lsoft.com/resources/optinlaws.asp http://www.lsoft.com/resources/optinlaws.asp E.g. B2B in Europe: "

Go ask your lawyer - because it's complicated. http://www.lsoft.com/resources/optinlaws.asp http://www.lsoft.com/resources/optinlaws.asp E.g. B2B in Europe: "For business-to-business communication (B2B), i.e. "legal persons", EU member states are free to make opt-out the minimum legislation. However, national legislation of member states can require opt-in for B2B email communication too." Then let's say the recipient is in Germany: http://www.marke-x.de/deutsch/webmarketing/archiv/email_marketing-recht.htm http://www.marke-x.de/deutsch/webmarketing/archiv/email_mark... Go read it with a translator.