In May 2010, Constant Contact acquired NutshellMail,[7] a free tool that lets users monitor their social media accounts from their email.

The program is hosted in the company's 30,000 square foot InnoLoft office space, located in the Waltham, MA headquarters.

[14] In February 2021, Clearlake Capital (who acquired Endurance International) announced an investment of $400 million as a joint venture with Siris Capital, and the spin-out of Constant Contact as a standalone business[15] In August 2021, Constant Contact acquired the marketing automation and CRM system SharpSpring.

[citation needed] In 2007, the company was criticized by blogger Darren Barefoot on the grounds that its current and former employees responded deceptively to negative reviews of its products, services, and business practices.

[17][18] The company spokesperson Kevin Mullins reportedly acknowledged that Constant Contact employees had posted the comments on Barefoot's site, but said "They acted outside our corporate policy.