As a recipient of garbage cold outreach emails, there is a lot that can be improved. I get tons of silly founder-spam, most of which tries to appeal to me based on one or two facts about me/my company. This leads to off-base pitches (I used to be a lawyer and am now an entrepreneur; some emails assume I work in legal tech, which I don't). Other emails appear to have harvested my email from HN, and make references to YC.
Because I hate emails like this so much, I send very few cold emails, even though I work in the B2B licensing space. I find relevant people on LinkedIn and can typically find a warm introduction. I'd prefer to miss out on some opportunities rather than contribute to the spam avalanche that's overloading people's inboxes.
I guess my hope is that tools like yours would do a better job identifying truly relevant prospects instead of taking a spray-and-pray approach. I would consider using a tool that searched for prospects, showed me a personalized email, and then showed me why each part of the email is relevant. I would want to manually review every single email that gets sent out in my name.