Has someone asked you to make an eCheck payment? Are you looking to collect eCheck payments from customers? Are you all around confused by eChecks?. Overview. eCheck, an established payment instrument combining the security, speed and processing efficiency of all-electronic transactions with the familiar and. An eCheck is an electronic payment funded by the buyer's bank account. With an eCheck, the recipient should receive the money within business days. Ein Siegel für Ihre Sicherheit. Learn more about Checkout. The process mirrors paper checks, but is done electronically and much faster. How do eChecks work? PaySimple is headquartered in the heart of downtown Denver, CO.