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Category: Delivery Improvement

Measurements

One of the things I’ve been spending a lot of time thinking about lately is how we measure deliverability. Standard deliverability measurements include: opens, bounces, complaints, and clicks. There are also other tools like probe accounts, panel data, and public blocklists. Taken together these measurements and metrics give us an overall view of how our […]

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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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Dead addresses tell us things

There was confirmation this week that the increase in “user unknown” messages from Yahoo is actually Yahoo cleaning out abandoned accounts. At the same time a Yahoo is sending out notifications to folks to log into mail. The first thing every sender should do is remove all these Yahoo addresses from their lists. They’re done, […]

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My domain reputation is bad, should I get a new domain?

Many companies have the occasional “oops” where they send email they probably shouldn’t have. This can often cause a decrease in reputation and subsequent delivery problems. Some companies rush to fix things by changing domains. Getting a new domain does not fix the problem! Brand new domains, those registered less than 30 days, have really […]

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What’s a suspicious domain?

The question came up on slack and I started bullet pointing what would make a domain suspicious. Seemed like a reasonable blog post. In no particular order, some features that make a domain suspicious to spam filters. Domain is used in… … mail users complain about … mail users delete without reading … mail sent […]

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Marking mail as spam says what?

I wear a number of hats and have a lot of different email addresses. I like to keep the different email addresses separate from each other, “don’t cross the streams” as it were.   Recently I’ve been getting spam to my womenofemail.org address asking about the wordtothewise.com website. I’m not sure where Ms. Catherine Metcalf […]

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Who are mimecast?

Mimecast is a filter primarily used by businesses. They’re fairly widely used. In some of the data analysis I’ve done for clients, they’re a top 10 or top 20 filter. Earlier today someone asked on Facebook if mimecast may be blocking emails based on the TLD. The short answer is it’s unlikely. I’ve not seen huge […]

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What does mitigation really mean?

It is a regular occurrence that senders ask filters and ISPs for mitigation. But there seems to be some confusion as to what mitigation really means. I regularly hear from senders who seem to think that once they’ve asked for mitigation that they don’t have to worry about filtering or blocking at that ISP for […]

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What kind of mail do filters target?

All to often we think of filters as a linear scale. There’s blocking on one end, and there’s an inbox on the other. Every email falls somewhere on that line. Makes sense, right? Bad mail is blocked, good mail goes to the inbox. The bulk folder exists for mail that’s not bad enough to block, […]

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Tempo

When we say that you might just be sending too much email and fatiguing or annoying the recipient into unsubscribing or hitting spam, this is the sort of thing we mean. Three emails (to the same email address) in four minutes might be a bit much. If you can’t combine the content you want to […]

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