From the signature editor you have the possibility of adding a URL link to the images that you integrate into the images of your signature.
Access the signature editor from an existing signature by clicking on the "Pencil" pictogram or by clicking on the "Create a new signature" button.
Select the image for which you want to embed a URL link.
Tip: The image can be the "Profile picture" or your "logo".
The left side menu is activated.
Unfold the "Content" menu, then enter the URL link in the "Link" field.
Finally, click on "Save".