I have been online right from the advent of internet when I used to send random emails from email directory.
It's easy to judge others as pervs but put yourself in their shoes and those genuine like you trying to reach out. I guess you don't initiate personal e-mails like most other girls. At least you can entertain and appreciate those who have the guts to email. Yes .. many are learners and not experts because they only get snubbed or criticized and they never get to learn.
So instead of rejecting categorical, have a good and healthy response and even admonish their overtures by ignoring and focussing on things you like
Because at the end of the day it would be you who would have none of end up with a phoney.