If I log into XNet Webmail and find an e-mail in the spam folder but it is not spam, then move it to the inbox, does the server learn from that or do I have to inform XNet about it?  My payslip was flagged as spam, I wish the tax I pay was spam, but unfortunately one can do nothing about that.  However it would be nice if I actually receive my payslip.

Also, does the spam folder get emptied automatically and when?  Thanks.