Tracker provides the option to customize and send applicants an email when they apply to a job that you've posted either to your own website, a Jobs+ site or a Jobs Lite microsite. Also, this will be sent when a candidate performs a general application which isn't for a particular position.
An automatic email will be sent to applicants only if a system template "Application Response" is selected when you are editing the standard template.
Creating a Job Specific Template
Navigate to Tools & Settings | Customization | Standard Templates
Click the green plus sign to create a new Standard Template:
Make sure you select 'Placement' as the Association to include job specific information in your message to the candidate:
Once the template is created, on the right side under Association, be sure to select 'Application Response' as the System Template:
Next you can customize the subject line as well as the body of the email with job specific information, such as the job name (using the tag [[Opportunity Name]] and Pay Rate / Job Description etc.):
You should expect your candidates to receive one email confirmation per unique job application. If they apply to the same job more than once, only one email confirmation will be sent.