Accounts > Personalize
First you must have a "Custom Web Form" with a custom field in order to utilize this feature. If you do not have one created, please read follow these tutorials. Create Custom Web Form (link) Create Custom Field (link).
- Go to "Accounts > Personalize" and click on "Set Tokens".
- Specify your token name. (Ex. firstname, music, etc.) I have created a token for my custom field of "Music Preference".

- Now go to "Accounts > Autoresponders" and click on "Add Response".
- Choose what type of autoresponder you would like to create. The token can be inserted into any type of response regardless of message type.
- When you are ready to insert your token into the body or subject line of the auto responder, scroll down to the "Insert Personalized Option" area.
