Can I ask a journal editor about an invited review paper? I would like to know whether I can place an inquiry to a journal editor about writing an invited review paper. In particular, I would like to write a review paper on a particular topic which is currently of significant research interest. However, I have not been invited to do so from the journal (where I would like to publish this review paper). In this regard, I am wondering whether I could draw the editor's attention via email and ask him whether I could be requested officially from him to write this review paper. Is it a valid inquiry from my side?
Is it a valid inquiry from my side?


NO. Invited reviews are the word "invited" means. The other party invites you to write a literature review paper because of your great expertise. You do not invite yourself. If you are Mr.Nobody, the whole effort of self-inviting will be embarrassing for you.

That does not mean that you should not actually proceed with the review paper. Just keep in mind that review papers are usually done by respectable and well-known authors who have contributed greatly and have great expertise in the suggested area. Also, remember that writing an extensive literature review may be very time consuming if you want to cover a great area. This is why review papers are done my multiple well-established authors who contribute almost equally and not by a single inexperienced author.