VENDOR: Email Protection Agency
PRICE: $1.60 per user per month (based on 1,000 users)
VENDOR: Sophos, Inc.
PRICE: Free (included with AV license; $600 for 10 users)
VENDOR: BlackSpider Technologies
PRICE: 500 users costs $1.42 per user per month ($8,520 p.a.)
VENDOR: Inty Ltd.
PRICE: $28.20 per user, per annum - based on a 500 user pack
