Interested researcher may wish to send their email as well to future communications. The need is urgent. Please only reply in case you are really interested. We are ready for an authorship in the paper.
I thank you very much for your mail. Actually, another researcher has already replied to me on this and I have forwarded all the details to him.
However, I have seen your work and indeed there is so many areas where we can collaborate. Therefore, I would like to be in touch with you regarding my future research.