If your answer to the question posed in the headline is a resounding "no", then you needn't worry because they don't.
As part of a shake-up of its collaboration business, Cisco is axing a hosted email service that very few people seem to have known about.
The Cisco Mail service was launched a little over a year ago using technology Cisco acquired when it bought WebEx.
It cost between $3.50 and $5 per month for a five gig mailbox, and a buck extra if you wanted it on your BlackBerry, but it seems that has failed to pique anybody's interest.
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In a blog post yesterday evening, Debra Chrapaty, senior veep and general manager of Cisco's Collaboration Software Group, said that in 13 months of testing the product had been received quite well.
"But," she added, "we've learned that customers have come to view their email as a mature and commoditised tool versus a long term differentiated element of their collaboration strategy."
Debra continues; "We've also heard that customers are eager to embrace emerging collaboration tools such as social software and video."
So it's nothing whatsoever to do with the fact that Google Apps for Business will give you 25 gig of storage for $50 per annum, according to the WSJ, with BlackBerry, iOS, Android and Outlook interoperability, then?
Ah, farewell then, Cisco Mail, we hardly knew 'ye...