Lahey Clinic, which is based in Burlington MA and is affiliated with Tufts University, is the latest customer to sign on for email marketing and branding services from LetterMark.

LetterMark is part of Research Triangle Software.

Lahey Clinic includes more than 450 physicians and 4,000 support staff.

“The use of email in healthcare is dramatically increasing,” said Joseph M. Healy, Jr., senior vice president of Lahey Clinic. “The addition of LetterMark Email improves every email our physicians and staff send by enhancing our image and improving communications with our patients.”