What matters for reputation?

There is a contingent of senders and companies that seems to believe that receiver ISPs and filtering companies aren’t measuring reputation correctly. Over and over again the discussion comes up where senders think they can improve on how reputation is measured.
One factor that is continually repeated is the size of the company. I’ve even seen a couple people suggest that corporate net worth should be included in the reputation calculation.
The problem with this suggestion is that just because a company is big or has a high net worth or is on the Fortune500 doesn’t mean that the mail they send isn’t spam. I’ve certainly received spam from large, name brand companies (and organizations). I’ve also consulted with a number of those companies who bought or appended a list and then had to deal with the fallout from a Spamhaus listing or upstream disconnection.
Sure, there is a certain logic to company size and prominence being a part of a reputation calculation. For instance, my experience suggests consumers who recognize a brand are less likely to treat mail as “spam” even if they didn’t sign up for the mail in the first place. Certainly there are large brands (Kraft, FTDDirect, 1-800–Flowers, OfficeDepot) that have been caught sending mail to people who never opted in to their lists.
Many people don’t realize that company size and prominence are already factored into the reputation scores. No ISPs don’t look at a mail and, if it’s authenticated, add in a little positive because it’s part of a giant, name brand company. Rather, the recipients change how they interact with the mail. Even recipients who didn’t sign for mail from Office Depot may click through and purchase from an offer. Some recipients recognizing the brand will hit delete instead of “this is spam.”
All of these things mean that big brands have recognition that takes into account that they are prominent brands. Elaborate processes and extra reputation points given to big brands don’t need to happen, they’re already an innate part of the system.
 

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Email marketing ulcers for the holiday

I’ve mentioned here before that I can usually tell when the big ISPs are making changes to their spam filtering as that ISP dominates my discussions with current and potential clients and many discussions on delivery mailing lists.
The last two weeks the culprit has been Yahoo. They seem to be making a lot of changes to their filtering schemes right at the busiest email marketing time of the year. Senders are increasing their volume trying to extract that last little bit of cash out of holiday shoppers, but they’re seeing unpredictable delivery results. What worked to get mail into the inbox a month ago isn’t working, or isn’t working as well, now.
Some of this could be holiday volume related. Many marketers have drastically increased their mail volume over the last few weeks. But I don’t think the whole issue is simply that there is more email marketing flowing into our mailboxes.
As I’ve been talking with folks, I have started to see a pattern and have some ideas of what may be happening. It seems a lot of the issue revolves around bulk foldering. Getting mail accepted by the MXs seems to be no different than it has been. The change seems to be based on the reputation of the URLs and domains in the email.
Have a domain with a poor reputation? Bulk. Have a URL seen in mail people aren’t interested in? Bulk. Have a URL pointing to a website with problematic content? Bulk.
In the past IPs that were whitelisted or had very good reputations could improve delivery of email with neutral or even borderline poor reputations. It seems that is no longer an effect senders can rely on. It may even be that Yahoo, and other ISPs, are going to start splitting IP reputation from content reputation. IP reputation is critical for getting mail in the door, and without a good IP reputation you’ll see slow delivery. But once the mail has been accepted, there’s a whole other level of filtering, most of it on the content and generally unaffected by the IP reputation.
I don’t think the changes are going to go away any time soon. I think they may be refined, but I do think that reputation on email content (particularly domains and URLs and target IP addresses) is going to play a bigger and bigger role in email delivery.
What, specifically, is going to happen at Yahoo? Only they can tell you and I’m not sure I have enough of a feel for the pattern to speculate about the future. I do think that it’s going to take a few weeks for things to settle down and be consistent enough that we can start to poke the black box and map how it works.

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Confirming spam reports

Someone floated the idea of having ISPs confirm that a user really wants to report a mail as spam every time they do so. The original poster was asking for comments and what we thought of such an idea.

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Public reputation data

IP based reputation is a measure of the quality of the mail coming from a particular IP address. Because of how reputation data is collected and evaluated it is difficult for third parties to provide a reputation score for a particular IP address. The data has to be collected in real time, or as close to real time as possible. Reputation is also very specific to the source of the data. I have seen cases where a client has a high reputation at one ISP and a low reputation at another.
All this means is that there are a limited number of public sources of reputation data. Some ISPs provide ways that senders can check reputation at that ISP. But if a sender wants to check a broader reputation across multiple ISPs where can they go?
There are multiple public sources of data that I use to check reputation of client IP addresses.
Blocklists provide negative reputation data for IP addresses and domain names. There are a wide range of blocklists with differing listing criteria and different levels of trust in the industry. Generally the more widely used a list the more accurate and relevant it is. Generally I check the Spamhaus lists and URIBL/SURBL when investigating a client. I find these lists are good sources for discovering real issues or problems.
For an overall view into the reputation of an IP address, both positive and negative, I check with senderbase.org provided by Ironport and senderscore.org provided by ReturnPath.
All reputation sources have limitations. The primary limitation is they are only as good as their source data, and their source data is kept confidential. Another major limitation is reputation sources are only as good as the reputation of the maintainer. If the maintainer doesn’t behave with integrity then there is no reason for me to trust their data.
I use a number of criteria to evaluate reputation providers.

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