Step-by-step installation instructions

A. Download and install Penango

  1. Are you trying to use Penango for free Gmail or free Google Apps?  Have you purchased Penango for a paid Google Apps account?  Download it here. Are you trying to use Penango for paid Gmail, paid Google Apps, and Zimbra e-mail addresses? Buy or try it here.
  2. Penango should automatically download and begin installation. If it does not, on the download page, click on "click here" to begin the download.
  3. Your web browser will prompt you whether to allow or run the installation. Allow it, or run it. For Firefox: The installation will happen within the browser. For Internet Explorer: After the installation file has download, you will need to run the installer program.
  4. For Firefox: Once installation has finished, you will be prompted to restart your browser. When it is convenient for you to restart your browser, please do so. For Internet Explorer: Once the installer has finished, Penango will be running the next time you load up Gmail, Google Apps mail, or Zimbra. You are not required to restart Internet Explorer.

B. Tell Penango where your certificate is

  1. If you do not already have a certificate: Please get a certificate for free from Comodo or from any other well-known certificate authority (CA). To simplify installation, we recommend that you use the same browser to retrieve the certificate as the browser on which you will use Penango. For example, if you plan to use Penango on Firefox, use Firefox to retrieve your certificate. Optional but highly recommended: backup your certificate. You can do so in Firefox by going to the Tools menu, then Certificate Manager; and in Internet Explorer by going to Internet options, then the "Content" tab, and then clicking on the "Certificates" button.
  2. (For Firefox) If you already have a certificate: Go to "Tools" then "Certificate Manager," then import your certificate.
  3. (For Internet Explorer) If you already have a certificate: Go to "Internet options," then the "Content" tab, then click on the "Certificates" button and import your certificate.

C. Use Penango to secure your e-mail messages

  1. If you want to send an encrypted e-mail to a recipient, you will need his or her certificate. As soon as you finishing typing in the e-mail address, Penango will try to look up the recipient's certificate; if Penango cannot find the certificate, you can get the recipient's certificate by (1) asking the recipient to send you a signed e-mail, since a signed e-mail will include his or her certificate, and then opening that particular e-mail; (2) importing the recipient's certificate by using Certificate Manager in Firefox or the import certificate box under the Privacy tab in Internet options in Internet Explorer; or (3) instructing Penango where to look for certificates by changing its preferences in about:config (for Firefox) or in the Registry at HKEY_CURRENT_USER\Penango and HKEY_LOCAL_MACHINE\Penango (for Internet Explorer) (this is for advanced users and system admins; for more information, please read our Administrator Guide).

D. Still have more questions?

If you have any unanswered questions, please send us a support request and we will assist you.