Zix Corporation provided revenue guidance for the fourth quarter and full year ended December 31, 2018. Based on preliminary unaudited results, the company expected revenue for the fourth quarter of 2018 to be between $18.3 million and $18.4 million, which represents a new company quarterly record and an increase of 9% to 10% compared to $16.8 million in the fourth quarter of 2017. Based on preliminary unaudited results, the company expected revenue for fiscal 2018 to be a record $70.3 million to $70.4 million, which represents an increase of 7% compared to $65.7 million in fiscal year 2017.