To add an image or company logo to your email signature in Outlook, do the following: 1. Launch a new email. 2. Choose "Signature." 3. Select the signature you want to have the image from the "Select signature to edit" box. 4. Click the "picture" icon, find your image file, then click "Insert." 5. Right-click the picture to resize it, then select "Picture." 6. Click the "Size" option, then use the choices to resize your picture. Check the "Lock aspect ratio" checkbox to keep the image proportions. 7. Once you're happy with the results, click "OK," then "OK" again to save the changes.