Constant Contact buys social aggregator NutshellMail

Waltham, Mass.—E-mail marketing and survey company Constant Contact has acquired NutshellMail, whose technology serves up social network information via e-mail. Financial terms of the deal were not disclosed.

NutshellMail, based in Menlo Park, Calif., collects and organizes messages and activity from social networks, and delivers the information in an e-mail “snapshot.” Aimed at small businesses, the free service allows users to customize the content they want to track, add search terms and choose how frequently they receive e-mail updates.