Yes, you can add an unsubscribe or email preferences link to your autoresponder via the Insert Link tool in the WYSIWYG.

Follow the steps below to do so:
  1. Open the Edit screen for the desired autoresponder
  2. Skip to the Edit HTML screen
  3. Type or highlight the text that will be hyperlinked to the unsubscribe/email preferences page.
  4. Click the Insert Link tool icon
  5. From the pop up, select Browse Links.
  6. Select User Registration as the Link Type, and select the desired page.
  7. Click the Select button and then Insert.
  8. Save the changes to your autoresponder.