How to reply for a job interview invitation via email?

Any sample email response would be great. Thank you, 10 points to best reply.

Though email is an option to confirm a job interview, calling is a much better and faster means to communicate your intention. Your email can get caught in the spam folder or not immediately read by recruitment staff. Hence, it makes sense to call and look for the person who scheduled your interview. Fax, meanwhile, is too intrusive.