The other thing that there 's a psychological effect that  at least for most people , that if they 've responded to your email saying " yes , I will do it " or " yes , I got your email " , they 're more likely to actually do it   later  than to just ignore it.
Mm - hmm.
And of course we don't want them to bleep things out , but it  it 's a little bit better if we 're getting the  their , uh , final response , once they 've answered you once than if they never answer you 'd  at al at all. That 's how these mailing houses work. So , I mean , it 's not completely lost work because it might benefit us in terms of getting  responses.
Mm - hmm.