i think responding immediately makes sense: the other party is at the computer/by the smartphone. they tend to read the freshest emails that come, and if they h

i think responding immediately makes sense: the other party is at the computer/by the smartphone. they tend to read the freshest emails that come, and if they have thought on the topic just a few minutes ago, they may jump to your letter and respond to you with more useful info. wait half an hour, and the emailing session of your potential investor could be over, and your response would be buried under other important bullshit in their inbox.