Contacta is the most complete product in its category. It offers direct marketing campaigns targeted by company, language and arbitraty groups. For instance, this would let you send a specific message (via e-mail, SMS or postal mail) to every contact from Fitur 2009 speaking Dutch, or any other data combination you may need. Moreover, it features custom letterheads, in-line photogallery, on-demand attachments, per-contact send confirmation, and it´s adapted to the Data Protection Act.
You can access a demonstration site (in Spanish) at www.impacta.eu/contacta (user: demo ; password: demo).