Microsoft said that Hotmail subscribers are now limited to sending only 100 messages a day “in an effort to prevent spammers from using Hotmail to spread spam,” said Lisa Gurry, MSN lead product manager. The change, made last week, should affect only about 1 percent of its nearly 110 million worldwide users, based on historical usage data, Gurry said.

“The higher the limit is, the more likely that the service can be used for spam, so we found that 99 percent of Hotmail users would find this new limit perfectly acceptable,” she said.

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