|Scenario Task Description=You've come to the right place! (un)Fortunately, in order to learn how to cryptographically sign your message, you firsts need to read [[I want to learn about encrypting email]]. Using the same key pair, you can digitally sign your message to prove its authenticity and integrity to the recipient. For more information please start by reading the [http://www.bitcoinnotbombs.com/beginners-guide-to-pgp/ Digital Signatures] section on the Bitcoinbombs website and then a [https://securityinabox.org/en/guide/thunderbird/windows practical guide for your email client] from the Security in-a-box resource.