To obtain certificate
Digital certificates are issued by independent certification authorities. When you apply for a digital certificate at a certification authority's Web site, your identity is verified before an ID is issued. There are different classes of digital certificates, each certifying to a different level of trustworthiness. For more information, visit the certification authority's Web site. You can use Free Secure Email Certificate from Comodo.
To obtain up-to-date information about other certification authorities, follow the steps below:
2. Click the Tools menu, and then click Options.
3. Click the Security tab, and then, under Secure Mail, click Get Digital ID.