Unsolicited CVs from grad school applicants - ignore or try to help?
I think we all get these emails and being famous and more senior probably means getting more of them. I am not famous or senior so I get one/two of these a day. I reply to them all. I am not sending man to mars and and can spend 30 seconds to reply to someone who sent an irrelevant one or spend a bit of time helping someone who was genuine and/or had a high calibre and went and studied my work. Naturally the quality of my reply depends on the quality of the email I have received. Thats the least that I can do. I must confess at times it has been a one liner saying "at least do a bit of research and see what I do instead if this generic meaningless email and have attached my boilerplate text explaining why this is not helpful and what they should do" but also sending a three pager, correcting mistakes I have seen in CV, cover letter and/or proposal and calling people I know to help somebody out. 

Why do I do this? Yes it takes time and we are all busy but I enjoy the fact that I am in a position to guide someone and help them out in bettering themselves. Many have done this for me before and believe it or not those guys who replied were really helpful. I do the same in hope that it might inspire someone, help him/her succeed and give them the sense that people do care about you and want to have your back. Same way many people are in this community who give their time and help strangers they don't know.

Now answer to the question:
Write a boilerplate text for the ones who send you random stuff. This is not the last time you will get something like this. Explain why this is not going to help and what is the correct way. You only have to do this once and whether they take your advice or not is their choice...

In future if you become an academic please do try to help people and don't see their efforts as SPAM if you feel they are genuine and have tried. Also give the benefit of the doubt to the ones who send random emails. They might just be desperate and need some help. Preparing some text to explain the above might actually help someone. It might be that he/she has got bad advice about how to go about finding positions etc.