In a case that illustrates the trickiness of e-mail communication, a federal judge has slapped Domino’s Pizza with an injunction that orders the pizza giant to reinstate a Chester County franchise because the company’s e-mail notices of franchise requirements and violations weren’t properly addressed.

In court papers, Domino’s argued that franchise owner Gregory T. Grosso had committed a series of franchise violations that justified termination of the agreement, including failing to follow Domino’s policy on conducting criminal background checks of all employees and failing to attend a franchisee training class.