You can enable or disable the "Add to Campaign" button from your email threads by adjusting the setting in your Yesware Preferences to "on" to have the icon appear in the thread or to "off" to remove the icon from your thread.
To adjust this setting:
- Click the "Yesware" drop down menu at the left hand side of Gmail
- Select "Preferences"
- Click on "Inbox"
- Toggle on or off the "Add a Recipient to a Campaign from an Email" setting
- Click "Save & Reload"