I have my work account with yahoo, and rarely do I get a work email in spam. This has happened, but rarely. Way too much trouble for me to change now, as all companies have my yahoo address as well as paypal...never had a problem with paypal. I have heard Gmail screens spam better, but when I started, I didn't know, just did it all on my own, no forums. yahoo isn't a problem, just if I'm expecting something, I'll check spam first, and my important companies are in my address book, so, they don't go to spam.
Live consciously....