Email is the best way to get a hold of me. I'll always try and respond to messages within 24 hours.
I'm pretty responsive to messages that I receive, but I'm working on respecting business hours and boundaries. I try and keep my business replies between 8:00-17:00 Central time.
We can keep it casual, too!
Even in business correspondence, you can address me with just my name; I don't use gendered honorifics like "Mr." or "Sir".