Always acknowledge all job applicants. Let them know that you will be contacting them one way or the other. That way you will not be deluged with follow-up phone calls.
1234, Main Street
Boston, MA 02123
<Recipient Address Goes Here>
Thank you for applying for the position of <job position> at Abc Company. We are currently reviewing the qualifications of all the applicants and expect to begin interviewing the week of <interviewing date>. If your qualifications seem to match what we are looking for, you will be contacted in order to set up an interview.
We appreciate your interest in Abc Company. You should hear from us one way or the other by <date>. Good luck.
encl: <List of enclosed items goes here>