While it is legal in all 50 states to serve as your own registered agent, we almost never recommend doing so. While it can save you $100+ per year, the biggest issue is that you may be required to make your personal address and phone number a matter of public record, which is a serious privacy concern.
In addition, if you serve as your own registered agent, you will need to be available from 9 am to 5 pm every weekday, because if someone tries to serve you for a lawsuit and you’re not around, the suit could continue in your absence, without your knowledge.