A light signature with no photo or logo. The only images are three tiny contact icons, and if an email app blocks them, the letters M, E and W show in their place. Pick a person, check the preview, then copy it into Gmail.
Worth having on Kath's signature, since every email she sends is a sales touchpoint. A booking link or your portfolio both work.
Kind regards,
For Hostinger webmail or Outlook, use Copy HTML code if the rich paste loses its styling.