The signature goes on every email Artra sends for you, with the unsubscribe link your plan requires.
Click "Settings" in the sidebar.
Click the "Signature Line" tab.
Write your signature. Bold, links and an image (a logo or headshot) are supported.
Your unsubscribe link. Add it to the signature or let Artra append it; replies and one-off emails never include it.
Click "Save Changes".