Some companies sick of spam email have actually done more harm than good when implementing anti-spam filters - as genuine business gets thrown out with the natural Viagra and low interest loan junk mail, and employees spend precious time chasing up emails which have gone astray.
US from Ferris Research suggests the cost to businesses of false positives - emails wrongly identified as spam - could be as high as $3.5bn. This takes into account time spent chasing emails which have been mistakenly filtered out or sifting through junk mail folders to find genuine emails.
Time spent in the IT department asking them to recover an email or on the phone asking 'why didn't your reply to my email?' or 'did you get my last email?' soon adds up and Ferris puts the cost at $50 per head per year in the US, saying costs in the UK are likely to be very similar.
Source:
http://uk.news.yahoo.com/030813/36/e647c.html
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