We know that rejection of research papers is very common in academic publishing, but what really bothers the authors is rejecting their papers without stating the reasons for rejection by editors, particularly when the paper matches the scope of the journal and the writing of the paper is academically acceptable, but it still somehow not enough to get accepted. The decision letter only informs the authors about the decision without any further explanations as to why such a decision was taken, many editors do this, it happened to me a couple of times. Why do editors do this? Why don't they care to explain the reasons for rejection? This is completely unfair to authors, especially if the submitted paper complies with the journal requirements. It's very frustrating. What should the authors do in this case?