Don’t threaten my attention, earn it.
When you want my attention, you cannot threaten to get it. You need to earn it. If you are a vendor selling your product or a company selling your services, you are going to find yourself in my spam folder by trying to shame me into responding to your emails.
What efforts have you put to show that your service or product is indispensable to me? If you think I cannot live without your product, show me. Just don’t send me emails with the subject lines “3rd attempt to connect.” Because honestly, I am neither obligated nor willing to respond to any attempts of emotional manipulation.