Microsoft has gone to war with so-called graymail - a category of email marketing that includes daily deal offers. There have been some doubts, though, as to whether this category of email truly exists, at least for a majority of consumers.

However, a new study from Accenture suggests that, at least for some consumers, the daily deal emails are indeed not used.  Daily deal subscribers that don’t take advantage of the offers cite items or services in which they are not interested, as well as deals that are not sufficiently focused on the local markets.

There is hope for marketers, though: The survey also found that e-mails with enticing offers can compel a consumer to make a purchase he otherwise might not make. The survey found that 26% of respondents said they’d bought an offer for an item or service they hadn’t anticipated buying. (via Internet Retailer).