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> I send mail to 200,000 subscribers who double opted in and want to receive the mail Google has no way of knowing that.

• patio11 12y ago
  They do. It is called IP reputation, and is the main reason your inbox is mostly spam-free: Google (and all the other large mail providers) keep reputation scores for IPs / IP blocks, based on what volume of ham/spam they send, and for the larger commercial senders they outsource anti-spam management by saying "Hey MSA: here are the minimum requirements for email getting relayed to Google customers. Ensure your customers respect them, or we'll end you. Toodles!"
  • frostmatthew 12y ago
    > They do. It is called IP reputation I didn't say Google has no way of detecting spam - I said Google doesn't know the recipients "double opted in and want to receive the mail"
    • patio11 12y ago
      Again, this is ensured by outsourcing verification. It is the same principal as "How does the USFG know that an arbitrary bank account in Japan is not controlled by terrorists and hence doesn't require enhanced scrutiny for wiring money to the U.S.?" The USFG trusts that the Japanese financial regulator has equally stringent regs, which will severely consequence a bank if they let a terrorist bank there. How does Google know you're clean on permission if you are coming from a MailChimp IP? Because Google knows MailChimp knows what Google will do to MailChimp if you aren't innocent.