Makes the certificates Vista and Firefox compatible and are available for download free of charge.

Comodo, a provider of Identity and Trust Assurance Management solutions, announced yesterday that its Email certificates are now Vista and Firefox compatible. They are available for download and remain free of charge.

The certificates allow users to encrypt and digitally sign email and attachments, keeping them secure and confidential. Encryption ensures that only the intended recipients have access to the material and verify the sender's identity. The message and any attachments can not be tampered with during the transmission of the Email.

The company continues to offer email certificates for free. These certificates are fully trusted by 99% of email clients.