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Ask HN: Why is 'Verified' B2B data becoming a deliverability trap?

• solarisos 8mo ago
  I'm asking this as a founder who just wasted a week on a 'clean' list with 0% bounce but near-zero opens. I’m trying to figure out if cold email as we know it is reaching a technical dead end, or if it's just that the data providers haven't caught up to modern ISP filtering. I've double-checked my SPF, DKIM, and DMARC—everything is green on my end, which points to a data/recipient-side issue.
  • PaulHoule 8mo ago
    Google would really wish the only channel that worked was their ad platform, I'll tell you that. We also don't know what you're pitching. If it's another samey AI startup seeing the subject line is like a punch in the gut. To be fair, 99% of people are trying to sell something that nobody wants to buy but once in a blue moon you see somebody's whose response rate has extra zeros on the right because they're selling something people are interested in.
    • solarisos 8mo ago
      That 'punch in the gut' feeling from a samey subject line is a great way to put it. I think we’ve reached a point where the 'standard' advice for cold outreach (use a catchy hook, keep it short, use AI to personalize) has been so overused that it now functions as a negative signal. You're spot on that PMF solves many deliverability issues—if people actually want the thing, they'll dig it out of the 'Promotions' folder. But my technical curiosity is about the gap before that: if a startup does have something genuinely useful for a specific person, are they even getting the chance to be seen? It feels like the 'noise' from low-quality AI pitches has forced ISPs to move to a 'guilty until proven innocent' model for any external domain. Google definitely benefits from that shift, as it pushes everyone back toward their walled garden of ads.
      • PaulHoule 8mo ago
        Last time I did cold outreach for an enterprise product that didn't quite exist yet (about 10 years ago) I sent hand-written emails to individuals and can't recall not being able to get an audience with someone that I wanted to get an audience with. [1] Last year I knew somebody in a similar situation who had a long list of "fish that got away" but they were pitching to celebrity bloggers, people in the gatekeeping-idustrial complex, etc. He was getting much worse results but he was pitching something really hard to sell. [1] looking back I find that hard to believe but I think that selective recall helped me handle the hustle
        • solarisos 8mo ago
          Selective recall or not, that 100% success rate from 10 years ago points to a different era of the inbox. Back then, a hand-written email was a signal of 'Proof of Work.’ The problem I'm seeing now is that AI has made 'hand-written' style emails incredibly cheap to forge at scale. If an enterprise lead receives 50 'personalized' emails a day that all look like they took 20 minutes to write (but actually took an LLM 2 seconds), the recipient’s internal filter just shuts down. Do you think the 'gatekeeping-industrial complex' you mentioned is now purely a social barrier, or have the technical filters (spam/quarantine) finally caught up to the point where even a genuinely 'hand-written' cold email from a stranger might never even be seen?
• solarisos 8mo ago
  A quick follow-up for those in the infra space: I'm seeing a weird discrepancy where 'Verified' status from most APIs seems to rely on the RCPT TO command. However, I've noticed more enterprise gateways are now returning a 250 OK for every address at a domain to thwart enumeration, but then silently dropping the packet at the transport layer if there's no sender history. If the SMTP handshake is now a 'liar,' is there any technical signal left that actually confirms a mailbox is reachable, or are we effectively flying blind?
• dagustu 7mo ago
  good