To create multiple signatures and choose signatures as you wish before sending email, please follow the instructions below
–While in Outlook, Go to Tools, Options, Mail format,
–Signatures to create new signatures. Click on New to create signature. Repeat the process to create as many as you desire. Remember to choose one as your default
–Create a blank signature that contains 2 dashes ( — ) to use when you don’t want to use a signature.
–To insert a signature, either click the Signature button on the toolbar, or choose Insert | Signature. At this point, you can choose which signature you want if not the default
Ex-Shell 