I can see how it would cause a problem if you weren't doing you job right or had no intention to.
Outside of that... not really.
Outside of that... not really.
That is part of the job.
Sure, there are crazy people out there. But they're going to be crazy anyway. I think this would make people take the crazy people even less seriously.
[1] https://medium.com/@RonWyden/shaking-my-head-5c1b60db9086#.h...
Also, keep in mind that you won't see emails from a given person which don't match the FOIA search criteria. The likelihood of getting a nonrepresentative sample is therefore proportionally increased.