Go to Dashboard > Edit Event
Scroll down and update your signature, at Email signature > scroll down and click save
3. Go to Emails > Email Templates, see tag: [event.email_signature]. Here your signature will be automatically filled out.
4. Go to Emails > Compose > Select attendee segment > Select an email template > Preview email & Send, here you see the email in full before sending it.
Once you set up your signature, it will be automatically attached to all available email templates.