Google to buy e-mail security company for $625 million

Google said on Monday it has agreed to acquire e-mail security company Postini for $625 million.

Postini supplies on-demand communications security and compliance products to more than 35,000 businesses and 10 million users worldwide. Google said the deal could enable it provide organizations with more hosted services similar to its Google Apps package, which includes its e-mail service Gmail, Calendar, and Talk, its messaging service.

Google said Postini will become a wholly owned subsidiary. The deal is subject to customary closing conditions and is expected to close by the end of the third quarter.