02Pillars
Three pillars. Every system lives in one.
SDR systems, cold email, and the evergreen infrastructure underneath both. Each pillar page walks the whole thing — every system as its own section, with its diagram, and why it's built the way it is.
$ls ~/deep-divestotal 3
01SDR systems, and everything after the replyThe systems the seat runs on — ownership routing, job-change and job-posting signals, visitor outbound, warm intro paths — and the full post-send chain that takes over once a prospect answers. I build this layer, and I work the seat it exists for.OutboundPost-sendSDR/AE02Cold email, run like a factoryTwo layers do the work: a message system that resolves strategy before anyone writes, and a sending fleet that lives on its own clock. Between them sits the one irreversible act in the whole program — the click — and everything is arranged to make that moment boring.OutboundDeliverabilityMessaging03From a raw vertical to a verified contactThe pipeline underneath everything else: grade the market once, source wide and keep the receipts, crawl cheaply and escalate only when needed, turn pages into a decision, and verify every address three times before it is allowed near a mailbox.DataEnrichmentAI