so much spam; but filter working great !!!

so much spam; but filter working great !!!

Because my computer recently crashed not once, but twice...I have gone to checking my emails on-line rather than use a program like Outlook to download to my computer. 

I cannot believe how much spam there is. The spam filter is catching all of it, but the shear volume. 

Is there anything I can do to reduce the level of spam; or is it just once they get an email address, it never ever stops?

thanks
wbriggs