Your email signature is automatically generated to reflect your user information once set in the profile area of your account. This information can be viewed and updated within Settings > Account Settings > My Funnel.
To add a new HTML signature to your Funnel profile, simply click the +add new signature button and paste your HTML code into the box, then click save. If you don't have an HTML code of your signature you can use an online HTML converter and copy the code once generated.
Once you have a signature saved to your profile you will be able to easily use this on all communications you send from your account going forward.
When you're creating a new email communication in Funnel, simply click on the Signature content block to add a signature to your email.