I don't think it is a scam email. The only thing that they could benefit from you replying to them is that they would then know that your account is active.
However, one thing which is noticeable in that mail is the lack of any dates. Since they are asking this mail to be forwarded around, it will be given an indefinite lifespan - far outliving the research project. If it were genuine I would have not expected such an oversight.
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