adToOne is an e-mail client which allows you to send individually created, profile-based, e-mail messages to customers, prospects and newsletter subscribers. adToOne lets you send mail only to recipients whose profiles indicate that they are interested in receiving the message. It is an easy-to-use bulk e-mailer, which hides the recipient list from each recipient. You can import recipient information from tab-delimited text files. In addition, you can send fax to recipients instead of e-mail.