A B2B list built on job titles and company headcount tells you who someone is. It tells you nothing about whether they are actively looking for what you sell. At any given moment, roughly 80% of a static list is not in a buying cycle at all.
Behavior data solves this. Funding announcements, leadership changes, hiring surges, tech stack migrations, geographic expansion — these are signals that a company is in motion. In motion companies buy things.
That is the upstream fix. Everything else — copy, deliverability, reply handling — gets dramatically easier when you are reaching the right people to begin with.