You can add signatures to documents and email messages in a few steps. Signatures in email messages support your identity, your logo, or brand. Digital signatures confirm the authenticity of your macros, legal documents, and other electronic documents, such as emails, or code projects, which you want to send or distribute. In addition you can learn how to obtain security certificates, which are needed for digital signatures.
I want to
Create email signatures in Outlook 2007 or 2010
Signatures in emails are a great way to make them more unique and to identify you as the sender.
What version of Office am I using?
Add digital signatures to authenticate your macros, files, emails, or code projects in Office 2007 or 2010
Help protect and authenticate your macros, documents, and other files with digital signatures. Learn about security certificates and how to obtain them for your signatures.