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Category: Delivery Improvement

Ask Laura

An Advice Column on Email Delivery When we work with brands and senders to improve email delivery, there are many questions that come up again and again. For 2016, we thought it might be interesting to answer some of those questions here on the blog so others can benefit from the information. Confused about delivery […]

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Troubleshooting delivery is hard, but doable

Even for those of us who’ve been around for a while, and who have a lot of experience troubleshooting delivery problems things are getting harder. It used to be we could identify some thing about an email and if that thing was removed then the email would get to the inbox. Often this was a domain […]

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CASL botnet take down

The CRTC served its first ever warrant as part of an international botnet takedown. The warrant was to take down a C&C (command and control) server for Win32/Dorkbot. International efforts to take down C&C servers take a lot of effort and work and coordination. I’ve only ever heard stories from folks involved but the scale […]

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Tell me about your business model

I posted Friday about how most deliverability folks roll their eyes when a sender starts talking about their business model. The irony is that one of the first things I do with a client is ask them to tell me about their business model and how email fits into their business plan. Once I know […]

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SPF debugging

Someone mentioned on a mailing list that mail “from” intuit.com was being filed in the gmail spam folder, with the warning “Our systems couldn’t verify that this message was really sent by intuit.com“. That warning means that Gmail thinks it may be phishing mail. Given they’re a well-known financial services organization, I’m sure there is a lot […]

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Deliverability at Yahoo

We have multiple measures of deliverability. Ones that we don’t even let in the door, and then we have ones that customers indicated that they don’t want to be delivered.  – Jeff Bonforte, Senior VP Communications, Yahoo Mail Read a little more about Yahoo and spam over at Tech Insider, or listen to the podcast at […]

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IPv6 and authentication

I just saw a post over on the mailop mailing list where someone had been bitten by some of the IPv6 email issues I discussed a couple of months ago. They have dual-stack smarthosts – meaning that their smarthosts have both IPv4 and IPv6 addresses, and will choose one or the other to send mail over. […]

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Outrunning the Bear

You’ve started to notice that your campaigns aren’t working as well as they used to. Your metrics suggest fewer people are clicking through, perhaps because more of your mail is ending up in junk folders. Maybe your outbound queues are bigger than they used to be. You’ve not changed anything – you’re doing what’s worked […]

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The holiday mailing season

We’re half way through September and it seems way too early to start thinking about the holidays. But for marketers, even email marketers, planning should be starting now. This planning shouldn’t just be about content and targeting and segmentation, but should also cover deliverability. Most retailers use email marketing to drive traffic to their websites […]

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Reputation is about behavior

Reputation is calculated based on actions. Send mail people want and like and interact with and get a good reputation. Send mail people don’t want and don’t like and don’t interact with and get a bad reputation.   Reputation is not … about who the sender is. … about legitimacy. … about speech. … about message. […]

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  • Lost in the mists of time

    Over on the Farsight Security blog Joe St. Sauver talks about some of the early days of online abuse, on usenet. Laura and I were on the periphery of early usenet abuse, mostly as users, but Usenet (and IRC) around then were the places we both started with email abuse.No Comments


  • Ongoing Yahoo delays

    I've been hearing from folks over the last few days that they're seeing an uptick in deferrals from Yahoo! The deferrals are not uniform. ESPs report they're seeing some, but not all, customers affected. Other ESPs aren't seeing any changes. It's not just you. But it would be very worthwhile to dig into engagement and other stats. It's possible this is a new normal at Yahoo! and they're tightening filters to catch mail that doesn't fit their standards but was previously difficult to filter.No Comments


  • AOL starts using Sender Score Certification

    Good news for Sender Score Certified IPs. Return Path recently announced that AOL has joined the list of ISPs offering preferential treatment to certified IPs.  1 Comment


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