You can view the applicant details and you can download resume.
Application status can be changed on the right side to New, In Progress,Shortlisted, Rejected or Selected.
You can also rate them by clicking on the stars.
You can make a note of the things you want to remember about the candidate - like if he is suitable for another post or if he is overqualified etc.
To mail the applicants, you can select any Email template you have created in the Templates option in the Settings -> Notifications -> Templates tab.
Shows all the emails you have sent to the candidate