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Tag: filtering

Spam is never timely nor relevant

One of the ongoing recommendations to improve deliverability is to send email that is timely and relevant to the recipient. The idea being that if you send mail a recipient wants, they’re more likely to interact with it in a way that signals to the mailbox provider that the message is wanted. The baseline for […]

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When you can’t get a response

I’ve seen a bunch of folks in different places looking for advice on what to do when they can’t get a response from a postmaster team, or a filtering company. I was all set to write yet another post about how silence is an answer. Digging through the archives, though, I see I’ve written about […]

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Their network, their rules

Much of the equipment and wires that the internet runs on is privately owned, nor is it a public utility in the traditional sense. The owners of the property have a lot of leeway to do what they like with that property. Yes, there are standards, but the standards are about interoperability. They describe things […]

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Rethinking public blocklists

Recently, a significant majority of discussions of email delivery problems mention that neither the IPs or domains in use are on any of the public blocklists. I was thinking about this recently and realised that, sometime in the past, I stopped using blocklists as a source of useful information about reputation. I’m not even sure […]

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Gmail suddenly puts mail in the bulk folder

One of the delivery challenges that regularly comes up in various delivery discussion spaces is the “Gmail suddenly put my mail in spam.” From my perspective, there is rarely a “suddenly” about Gmail’s decision making process. As I was answering one of these questions I had a number of thoughts. I’ll share them here on […]

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Email filters and small sends

Have you heard about the Baader-Meinhoff effect? The Baader-Meinhof effect, also known as frequency illusion, is the illusion in which a word, a name, or other thing that has recently come to one’s attention suddenly seems to appear with improbable frequency shortly afterwards (not to be confused with the recency illusion or selection bias). Baader–Meinhof […]

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Gmail, machine learning, filters

I’m sure by now readers have seen the article from Gmail “Spam does not bring us joy — ridding Gmail of 100 million more spam messages with TensorFlow.” If you haven’t seen it, go read it. It’s not often companies write about their filtering philosophy and what tools they’re using to manage incoming bad mail. […]

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All filters are not equal

Many questions about delivery problems often assume that there is one standard email filter and the rules are the same across all of them. Unfortunately, this isn’t really the case. The biggest divide is consumer versus business filters. Business filters don’t really care about things like engagement. A sender could have near perfect engagement with […]

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What is spearphishing?

As I’m writing this, I’m watching Deputy Atty General Rod Rosenstein discuss the indictments of 12 Russian military officers for hacking activities during the 2016 election cycle. One of the methods used to gain access to systems was spearphishing. I think most of us know what phishing is, sending lots of emails to a wide […]

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Back to the office!

I’m back in the office after a busy June. The 2 continent, 3 city tour was unexpectedly extended to a 4th city thus I was out most of last week as well. What was I doing? We spent a week in Dublin, which is an awesome and amazing city and I love it a little […]

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