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The good, the typical and the ugly

In the theme of the ongoing discussions about ESPs and their role in the email ecosystem, I thought I’d present some examples of how different ESPs work.
The good ESPs are those that set and enforce higher standards than the ISPs. They invest money and time in both proactive and reactive policy enforcement. On Monday I’ll talk about these standards, and the benefits of implementing these policies.
The typical ESPs are those that have standards equivalent to those of the ISPs. They suspend or disconnect customers when the customers generate problems at the ISPs. They have some proactive policy enforcement, but most of their enforcement is reactive. On Tuesday I’ll talk about these standards and how they’re perceived by the ISPs and spam filtering companies.
The ugly ESPs are those that have low standards and few enforcement policies. They let customers send mail without permission. Some of the ugly ESPs even abuse other ESPs to send some of their mail, thus sharing their bad reputations across the industry. On Wednesday I’ll look at some of their practices and discuss how they affect other players in the industry.

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Monitoring Email Deliverability

I did an interview with Direct Mag recently about what I recommend mailers do to monitor email deliverability.

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Delivery problems are not all spam related

Not every delivery failure is due to poor reputation or spam. Sometimes ISPs just have problems on their mailservers and so mail doesn’t get through. It’s often hard for delivery experts (and their bosses and their customers and their clients) to watch email delays or rejections without being able to do anything about it.
Sometimes, though, there is nothing to do. The rejections are because something broke at the ISP and they have to sort through it. Just this week there’s been a lot of twitter traffic about problems at a major cable company. They are rate limiting senders with very good reputations. They have admitted there is a problem, but they don’t have a fix or an ETA. From what I’ve heard it they’re working with their hardware vendor to fix the problem.
Hardware breaks and backhoes eat fiber. Yes, ISPs should (and all of the large ones do) have backups and redundancies. But those backups and redundancies can’t always handle the firehose worth of mail coming to the ISPs. As a result, the ISPs start rejecting some percentage of mail from everyone. Yahoo even has a specific error message to distinguish between “we’re blocking just you” from “we’re shedding load and temp failing everyone.”

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