According to a recent Microsoft study, spammers send an average of 3.8 billion messages to Hotmail addresses every day. Thanks to a technology called Sender ID, an average of 20 million of those spam messages are blocked from e-mail inboxes every day.
Sender ID authenticates inbound e-mail to help verify that it is from the person that it says it is from. Messages that have been authenticated by Sender ID are less likely to be spam and messages that fail Sender ID are more likely to be spam.
If you use the following e-mail programs, you're already experiencing increased protection from spam through Sender ID:
- MSN Hotmail
- Windows Live Hotmail
- Microsoft Exchange Server
- Microsoft Office Live Mail
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