"Boxbe works with Outlook and Yahoo Mail among others and is on our must-have list to keep aggressive merchants at bay."

"Borrowing some ideas from IM and social networking, Boxbe adds a privilege system to your inbox which allows you to create an e-mail "friends list," much like those on social sites."

"The San Francisco-based startup has come up with a Facebook-style, invite-only guest list that allows you to tightly control and manage who gets into your inbox and who gets left behind."

"About a month ago, I discovered Boxbe... It was one of those rare "wow" moments that happens when you run across something that you haven't seen before and that you think has unlimited potential."

"When Mr. Arrington wrote a post about the persistent problem of e-mail overload and the opportunity for an entrepreneur to devise a solution, almost 200 comments were posted within two days. Some start-up companies were mentioned favorably, like ... Boxbe (restricts incoming e-mail if the sender is not known), ..."

"Boxbe, lets users of Gmail, Microsoft Outlook and Yahoo Mail create a guest list, giving them final say on who is allowed to send e-mail. Anyone not on the list receives an invitation to join when they send an e-mail to the Boxbe user."