Built the same way a paid one is, so you can judge the work rather than the pitch. If it isn't obviously better than the lists you're buying now, that's a useful answer too.
✓One company with a live trigger, under twenty days old
✓The decision-maker named and confirmed in role
✓Inbox and direct line, both tested on the day
✓A four-email sequence written to that trigger
The more precisely you describe who you sell to, the more useful the briefing is. Two sentences beats a paragraph of adjectives.