Any targeted, personalized cold approach service for b2b?

I’m looking for a service to automate personalizing emails from a targeted list(by finding common grounds with my service). The idea is to make the introduction based on some of their latest tweets or blog posts that shows interest in one of my service features so the approach will be much warmer.

If you saw this post, something to automate like this guy did

How much will be a cost for a freelancer doing this?

I think might be what you’re looking for.