Richard :
PPRuNe email is primarily web based, but there's an upgrade costriung about $25 a year to allow SMTP/POP access - I've gone for that cos I have three accounts I'm juggling at the mo.
I have NEVER had spam in my PPRuNe account - I use it solely for personal mail, and use a Hotmail one for registering for all those porno sites - ooops !