This paper explores the use of paralinguistics, defined as cues which facilitate interaction and communication without the use of specific words (e.g., emoticons, emojis) in instructor-student technologically-mediated out-of-class communication (TMOCC). Using an experiment manipulating cue use and instructor sex in initial emails, we examined how respondents' (N = 236) impressions of instructors' credibility and immediacy are influenced by these paralinguistics. Results suggest instructors who use paralinguistics may be perceived as more immediate and caring but less competent; perceived trustworthiness was unaffected by paralinguistic use. Instructor sex did not generate significant differences in students' impressions. These findings have implications for current instructors when engaging in TMOCC with students; limitations and future directions are also discussed.