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Tag: bounce

Spike in Yahoo error codes

A number of people have mentioned over the last couple weeks that they’re seeing a spike in Yahoo rejecting mail with 554    delivery error: dd Requested mail action aborted Discussions on various mailing lists indicate these messages are related to inactive accounts. Addresses that bounce at Yahoo with these codes should be handled as inactive […]

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Why is bounce handling so hard

It should be easy, right? Except it’s not. So why is it so hard? With one-on-one or one-to-few email it’s pretty simple. The rejections typically go back to a human who reads the text part of the rejection message and adapt and makes the decision about future messages. The software handles what to do with […]

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Relaying Denied

I’ve got multiple clients right now looking for insights about bounce handling. This means I’m doing a lot of thought work about bounces and what they mean and how they match up and how different ISPs manage delivery and how different ESPs manage delivery and how it all fits together. One thing I’ve been trying […]

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Zombies are real but less of a problem

A few years ago I wrote a series of blog posts about zombie email addresses. Zombie addresses are those that someone owned and used and interacted with, but for whatever reason stopped logging into and checking. This series started with the time before the zombies, and moved on to the zombie uprising. Then discussed how they […]

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Alternate contact when mail bounces

We received an invite from a local company recently. At the top of the invite there was a sticker. We attempted to send email, but your address bounced. Please contact either me or the tasting room to update. Thanks! We attempted to send email, but your address bounced. Please contact either me or the tasting […]

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April 2015: The Month in Email

We started the month with some conversations about best practices, both generally looking at the sort of best practices people follow (or don’t) as well as some specific practices we wanted to look at in more depth. Three for this month: Be gracious with opt-out requests. Email marketing is hard. Even when it’s successful, response […]

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Best practices … what are they?

“We follow all the best practices!” is a common refrain from many senders. But what does best practices really mean? To me the bulk of best practices are related to permission, technical setup and identity. Send opt-in mail. Follow the SMTP spec. Authenticate your mail with DKIM. Publish a SPF record. Don’t hide you domain whois […]

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Increase in bounces at Y!

I’ve been seeing reports over the last few days about an increase in bounces at Yahoo. Reliable people are telling me they’re seeing some increase in “invalid user” bounces. You may remember Yahoo announced an overhaul of their mail product back in December. Reliable sources tell me that this is more than just interface revamp. […]

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Thoughts on bounce handling

This week’s Wednesday question comes from D. What are your thoughts on bounce handling There’s no specific standard for bounce handling as we often talk about it. While a lot of people will mention the RFCs, the RFCs only say what to do with a single email that gets a 4xy or a 5xy during […]

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Bounces, complaints and metrics

In the email delivery space there are a lot of numbers we talk about including bounce rates, complaint rates, acceptance rates and inbox delivery rates. These are all good numbers to tell us about a particular campaign or mailing list. Usually these metrics all track together. Low bounce rates and low complaint rates correlate with […]

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