Bulk Email Sales Professionals That Have Posted Resumes

I would like someone to automate sending emails to people who have posted resumes online with keywords such as: "Sales Professional" "Sales Manager" "Technology Sales Consultant" "Virtual Sales" You will email them with a simple text email such as: "Since you mentioned sales in your resume, we are sending along our current opening for your review. If you are not interested, simply delete this email and we wish you much success in your job search!" Please tell me how much this would be on an ongoing basis. Please explain what your process will be to accomplish this task (Ex: Set up our existing data mining software with your query for a price of $xx/month.)