Hi I can do that, I'm a wordpress expert and sleep with my phone.
Haha yeah really I do.
Question is, what level of response do you need for each email? If you just need Level 1 acknowledge the problem and log a ticket, then that's easy, fixed price stuff. But if you need more like Level 2 support and trouble interactive shooting with the customer, then it needs to be base on the type of problem being registered.
Do you already have a help desk or ticket management system?