While uploading your synced contacts, we match each contacts against emails and phone numbers of a nationwide list of agents that we compiled. If we find a match, we mark that agent as a realtor in your First app. If an agent is using another email address that they did not register OR their name appears different in your phone than what they registered with, we don't have a good way of knowing they are an agent. We do our best to remove as many agents as we can, but we know that occasionally we do miss a few. If you find that agents are appearing in your Opportunities List, you can click the [Mark as Agent] button at the bottom of their Contact Profile page.