1. Graduates looking for their first job
2. Unemployed people looking for work
3. Employed people looking for better work
4. Recruiters scouring the web.
5. Automated systems that apply everywhere they can.
6. Spam.
The people from 1-3 are lost in the noise of 4-6. Automation should only try to discard the last 3. That's it!
Automation will save you time and money in the hiring process. You will spend that time and money in HR and employee management, which will end up costing you more. The more you rely on automation, the less you will personally screen people, which means you don't really know who you are hiring.
You are better off using my secret algorithm[1] to select candidates, then personally review their resume.
[1]: SELECT * FROM candidates ORDER BY RAND();