Pretty damn quick mostly! It all depends how busy I am. Sometimes I’ll get back within an hour or two, or later in the day. Other times I may be traveling or busy with my spellwork and get back the following day. At worst, it will take me a day or so to get back to you.
That said, I like to take weekends off – don’t you too? So I’ll mostly be shut down at weekends, save for emergency cases.
The key thing is it is me that replies to you! On occasion, you may get my admin assistant, Cynthia (who is very nice, understanding and efficient), if I’m very busy or am traveling and there’s no mobile network where I’m staying.
As I’m very busy with spellwork, email is very definitely the best and fastest way to contact me.