dotDigital said it believed earnings would beat expectations in a year that saw the digital marketing company bag a raft of new clients including oil giant BP, the Labour Party and banking group Santander.The group's email marketing automation platform, dotMailer, has driven strong growth with total group revenues up 16% to £13.8m.The company said: "The board is extremely pleased with the company's performance and now anticipates that full year EBITDA will be slightly ahead of the current market forecast £3.8m."It added: "This performance is a result of continued strong organic growth in the high margin and long-term recurring revenues generated by our core email marketing product, dot Mailer."After considering and then dismissing a number of potential acquisitions, the company has decided to instead concentrate on organic growth for 2013/14.Shares in the company were up 9.4% at 17.5p at 08:45 on Thursday.TB