3D Mailbox: Watermark
All outgoing emails sent with the Free version of 3D Mailbox have two lines of promotional text regarding 3D Mailbox, appended beneath a horizontal rule. To the recipient, it appears like in the sample below.
There's a big difference between our watermark, though, and the kind you've seen for years on Yahoo Mail, Hotmail, etc. If someone clicks on the URL, and at any point purchases 3D Mailbox, we'll pay you $10! All you need to do is join our Affiliate program (it's free, too) when you get your activation code!
The registered version of 3D Mailbox has no promotional text at all.