What are CaseKeys?
CaseKeys are a randomly generated unique mixture of uppercase and lowercase characters such as dOs@CoMaND.CoM. The idea is to use the "case" of the characters in the persons email address to differentiate instances of the same email address that have previously been "issued".

Below is a screen shot of how you can view and or issue new CaseKeys. This particular CaseKey was automatically generated with an out-going email sent via is being viewed.  You can Issue, Modify or Remove existing CaseKeys by interacting with the CaseKeys dialog within

How does CaseKey technology work?
CaseKey technology utilizes the thousands of unique "Case Combinations" that can be used to represent the same email address to fraught spammers in the same way that periodically changing your email address does.

A typical CaseKey may look like this: ADrIAn@GeoBYTes.CoM

But unlike periodically changing your email address, utilizing CaseKey technology does not inconvenience your friends or clients. Better still, as CaseKeys are automatically inserted into all of the messages that you send, and are consequently preserved when replied to or stored in address books, they don't inconvenience you either.

While they are just as effective as changing your email address, they avoid the hassle of doing so, and with over 270,000 combinations contained within your typical email address, you are unlikely to run out of "unique addresses".

What are the Advantages of having a CaseKeyed Email Address?
You can issue permanent or temporary keys that will automatically expire You can turn your email address into a key You can lock your email address - only those with a valid key can send you email without being subjected to sender verification Works with all major e-zines.

Can I use this with E-Zines?
Yes, you just issue a CaseKeyed email address to the e-zine when you sign up and that is all that is required. One of the disadvantages of using a traditional sender verification system is when the user wants to subscribe to an e-zine. It is common for e-zine providers to use automated subscription processes which are not capable of responding to the sender verification system's request for verification, making it necessary for the user to manaually white list the e-zine provider. Further, in many cases white listing the e-zine provider's email address is not possible as many e-zine providers frequently change the "From address" that the sender verification system uses to verify the sender.

This will open the Issue New CaseKey dialog.

You can select when a CaseKey expires by selecting a date on the calendar – by default a new CaseKey is set to ‘Never Expire’.