xorkeesign is a digital signature enabling service from Odyssey Technologies Ltd. xorkeesign runs on the versatile xorkee infrastructure that is a superset of PKI. This add-on is a specialized interface for authenticating the mails the users send and also to verify the authenticity of the mails received from others. When a signed mail is received the add-on helps the user to verify the senders' signatures by obtaining the public key associated with the senders mail id from xorkeesign. It displays the result of such verification when the add-on is clicked. It offers the user the certainty that the mail is genuinely from the claimed sender. This goes a long way in preventing users from clicking unsafe links and attachments and significantly reduce the efficacy of phishing and ransomware. When a signed mail is received in a browser/mobile app without this add-on, the users can continue to read the mail as if it is not signed. His usual mailing experience is not impacted in any way. The add-on also allows the recipient of a email to archive the mail body or one or more of the attachments as data attached signatures in CMS format. This will help in creating permanent authenticated business communication records. The add-on may work on other mail clients if they follow the page formats of these clients. Odyssey Technologies, the publisher of this add-on also publish add-ons for native mail clients like Mozilla Thunderbird, Microsoft 365 and the mail authentication and verification works seamlessly across all these mail clients including this. The add-on does not collect or store any other data than described above.