EngageSmart, Inc. provides vertically-tailored customer engagement and integrated payments solutions. The company operates through Enterprise Solutions and small and medium-sized business (SMB) Solutions segments. The Enterprise Solutions segment offers Software as a Service (SaaS) solutions to customer-client engagement through electronic billing and digital payments. The SMB Solutions segment provides end-to-end practice management solutions to health and wellness industry. It also offers SimplePractice, an end-to-end practice management and electronic health record platform that manages the practices, which enables virtual and in-person settings, schedule appointments, document cases, and billing and payment processing, as well as insurance claim processing; and InvoiceCloud, an electronic bill presentment and payment solution for government, utility, financial services customer digitize billing, client communications, and collections. In addition, the company provides HelathPay24, a patient engagement and payment platform for health systems, physician groups, dental practices, and medical billers, including patient self-pay collections; and DonorDrive, a fundraising platform for non-profits, healthcare organizations, and higher educational institutions, which produce virtual events, launch branded donation camping, and peer-to-peer fundraising. It was formerly known as EngageSmart, LLC and changed its name to EngageSmart, Inc. in September 2021. EngageSmart, Inc. was founded in 2009 and is based in Braintree, Massachusetts. As of January 26, 2024, EngageSmart, Inc. was taken private.