Your contacts settings are here all in one place. Some of these can be accessed from the Contacts app as well.
- Manage your segments - either edit the Main segments or Add a new segment group. We've already talked about this in the Segment your contacts article.
- Manage contact data fields - this is also previously mentioned. Refresh your memory by reading Manage contact fields.
- Manage your subscriptions - click the given link to preview the subscription page your customers are sent to when they click Manage my subscription from your newsletters and SMS.