PLEASANTON, Calif.--(BUSINESS WIRE)--Ellie Mae® (NYSE:ELLI), a leading provider of innovative on-demand software solutions and services for the residential mortgage industry, has joined the Electronic Signature and Records Association (ESRA), a trade association representing electronic signature adopters and providers. ESRA was founded in 2006 to educate businesses and the public about the legal, public policy, regulatory and operational issues involved with using electronic signatures and reco