One of the main responsibilities of the editorial office is to communicate effectively with authors through emails, formal letters, and most importantly through decision letters. Even when the content is informative and constructive and the editor has only good intentions, if the tone and level of formality are not managed properly, the image of the journal may be negatively affected, which may deter authors from submitting papers to the journal again. Despite their best efforts to treat authors respectfully, some editors may unintentionally cause offense if they lack the appropriate sociolinguistic knowledge required for effective English correspondence. In order to ease the burden of the editorial office, this tutorial aims to assist non-native English speaking editors by demonstrating the basic format and principles of writing formal letters and email, providing tips on how to select an acceptable level of formality, and offering strategies to avoid unintentional rudeness. Specific tips include framing issues positively, using indirect language, and using hedging. Through this tutorial, non-native English speaking editors are expected to develop sociolinguistic competence to write professionally and improve their efficiency in corresponding with authors.