The paper examines Vietnamese learners' reflections on and perceptions of the application of computer-mediated communication (CMC) into collaborative learning. Data for analysis included an evaluation questionnaire, consisting of 24 4-point Likert scale items, appended with six open-ended questions, and transcripts of 15, out of 30, teacher trainees from a TEFL (Teaching English as a Foreign Language) class who volunteered to participate in informal interviews. Several inferences were drawn from the results. The majority of participants enjoyed the technology-enhanced class in general. There were approximately equal numbers of students who preferred synchronous CMC, asynchronous CMC, or a combination of both. The students reported that the course helped improve their computer skills and collaborative experience, while they remained sceptical about improvements to their English language skills. More involvement in learning was observed during and after the course. In addition, the participants expressed confidence that they would attend similar courses in future and were willing to recommend this technology-embedded course to the next generations of students. (Contains 5 tables and 1 figure.)