Welcome to the free S/MIME KeyServer

Use this service to deposit your own S/MIME email encryption certificate, and use it to obtain other people's email certificates.

If your correspondents have uploaded their cert, then you don't need to wait for them to send you a signed email message, you can retrieve one immediately.

Join in! Number of currently available email addresses: 254

(Scroll down to see Disclaimer).

Which email certificate would you like to retrieve?

email address:
(For testing purposes, you may request the cert for kaie at kuix dot de)

Please enter the code seen below. (try different code?)

Do you want your own cert included?


On many systems you can click this link to write such an email.


Restricted to certificates that can be verified. Allowed CAs:

You sent an email, but it doesn't show up in the directory? The most popular reasons are:


Do you want your entry removed?

(This will remove entries for each email address your signature certificate contains.)