Oct 5 (Reuters) - Private equity firm General Atlantic LLC is exploring a sale of EngageSmart Inc (ESMT.N), a payments software vendor that has a market value of $3.3 billion, according to people familiar with the matter. Spokespeople for General Atlantic and Goldman Sachs declined to comment. EngageSmart software simplifies customer activities for companies such as paying a bill and going paperless. General Atlantic acquired a majority stake in the company, previously known as Invoice Cloud, in 2018. Summit Partners, a private equity firm that was already an investor in EngageSmart, retains an approximately 15% stake.

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Persons: EngageSmart, Spokespeople, Goldman Sachs, Evercore, Milana Vinn, David Gregorio, Chris Reese Organizations: Atlantic LLC, EngageSmart Inc, Goldman Sachs Group Inc, Evercore Inc, General Atlantic, Summit Partners, Thomson Locations: New York, The Braintree , Massachusetts, EngageSmart