I don't think it does, there's no reference to e-mail scan in the user manual and POP3 coverage is on the list of extra features if you pay for the premium version.
Not disputing the PCA results for Antivir 6 in a head to head of the scanning engine, but compared with AVG and avast! the latest freebie, number 7 ( Not the one that got tested by the way ). Is a bit light on features, some of them I'd expect to have. Not I think an upgrade on the other options.