Singlefin announced today that they're giving away their hosted spam filtering service, free, to organizations with 10 or fewer mailboxes. The press release (which isn't on their site yet) quotes their CEO as saying "Of course, we know that small companies can become large companies and if we extend this generous offer now while they are still growing, we are confident it will translate into brand loyalty and solid customer referrals down the road". Here's the most interesting part:

Any organization anywhere in the world is eligible to take advantage of this protection without the need for cumbersome software or expensive hardware. Singlefin solutions are 100% managed or “hosted” meaning protection for customer networks is all enabled through network redirects. One simple change to a customer’s DNS enables 100% protection from spam, viruses and other malware via Singlefin’s Enterprise Email Filter. The Web and Instant Message Filters are enabled through similar network changes.

This is a terrific move on Singlefin's part; the incremental cost for them to host these small organizations is low, but the brand-building value is very high. There are so many anti-spam solutions on the market that it's hard for vendors to differentiate themselves, but this should definitely help build awareness of Singlefin.