Mail Services

Although we are not going to rv "full" time we are going to be gone for at least 3 months. The only option I think we have is a mail servie to have mail forwarded to as USPS will not hold for longer than 30 in which I cant see my mail anyway. They will forward my mail for at least 3 months so I need a mail service. We used on in Florida last time which was great, but thought getting one in the same half of the country would get mail forwarded faster. SO, any recommendations for mail services out west? Home base in Colorado.