You can signature to your emails be creating a signature block and embedding it into your emails.
The easiest way to achieve this is using the Twig Templates Plugin. You can turn it on in the Plugins section:
After turning it on, you'll have a new block in your Friendly Automate menu.
Click on it.
Add a new Twig template with the New "button".
Here you can fill out the name and add your signature code.
It's time to test how it would look in real life.
Enter a lead name into the testing area and choose the lead from the dropdown. If you just make a simple signature, you'll have the same outcome for every lead you test.
One more thing before we move ahead. You'll need to remember the template id:
Head back to your emails in Channels > Emails > Click on the Email > Builder
Now you can add the template slug into the email. For the above example we would use template number 12:
{twigtemplate=12}
You can embed this slug into the email as follows: