Are seed lists still relevant?

Those of you who have seen some of my talks have seen this model of email delivery before. The concept is that there are a host of factors that contribute to the reputation of a particular email, but that at many ISPs the email reputation is only one factor in email delivery. Recipient preferences drive whether an email ends up in the bulk folder or the inbox.

The individual recipient preferences can be explicit or implicit. Users who add a sender to their address book, or block a sender, or create a specific filter for an email are stating an explicit preference. Additionally, ISPs monitor some user behavior to determine how wanted an email is. A recipient who moves an email from the bulk folder to the inbox is stating a preference. A person who hits “this-is-spam” is stating a preference. Other actions are also measured to give a user specific reputation for a mail.
Seed accounts aren’t like normal accounts. They don’t send mail ever. They only download it. They don’t ever dig anything out of the junk folder, they never hit this is spam. They are different than a user account – and ISPs can track this.
This tells us we have to take inbox monitoring tools with a grain of salt. I believe, though, they’re still valuable tools in the deliverability arsenal. The best use of these tools is monitoring for changes. If seed lists show less than 100% inbox, but response rates are good, then it’s unlikely the seed boxes are correctly reporting delivery to actual recipients. But if seed lists show 100% inbox and then change and go down, then that’s the time to start looking harder at the overall program.
The other time seed lists are useful is when troubleshooting delivery. It’s nice to be able to see if changes are making a difference in delivery. Again, the results aren’t 100% accurate but they are the best we have right now.
 

Truth, myths and realities
From the archives: Taking Permission

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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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Updated M3AAWG Best Practices for Senders

M3AAWG has published a new version of the Senders Best Common Practices document and the contains a lot of new information since the original publication in 2008. The new document covers how to vet ESP customers, considerations when selecting a dedicated or share IP to send mail, and includes best practices on a number of technical processes.
The Senders Best Common Practices document is targeted at deliverability teams and email marketers. Any company that is sending marketing emails, using an Email Service Provider, or provides an email enabled platform, it’s always good to go back and periodically review your system to ensure nothing was missed and to stay up-to-date on all new recommendations.
A few of the recommendations include the use of the List-Unsubscribe header, publishing a clear WHOIS for domains used for sending mail, and how to process non-delivery report messages.
The List-Unsubscribe header provides an additional way for users to opt-out of email messages. Gmail and Outlook.com both use the presence of the list-unsubscribe header to provide a one-click button to allow the user to unsubscribe from the mailing list. Often enough, if a user cannot find an opt-out link, they’re marking the message as spam. Allowing a recipient to unsubscribe easily is critical to maintaining good delivery reputation.
A WHOIS is query to determine who is the registered user or assignee of a domain name. During a session at the most recent M3AAWG meeting, it was announced that spammers throw away 19 million domains per year. When a postmaster or abuse desk receive a complaint, they’ll often query to see who owns the domain the email was sent from or who owns the domains used in the hyperlinks. If the WHOIS record is out of date or set to private, this limits the ability for the postmaster or abuse desk to reach out to the owner of the domain.
Processing non-deliver reports is critical to maintaining a high delivery reputation. Many ESPs have an acceptable-use-policy that includes a bounce rate. Mailjet recommends a bounce rate of less than 8% and Mandrill recommends less than 5%. If a system is not in place to remove the hard bounces from your mailing list, the sender’s reputation will quickly deteriorate.
The Senders Best Common Practices document can be downloaded at M3AAWG.org.
 

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Permission-ish based marketing

My Mum flew in to visit last week, and over dinner one evening the talk turned to email.

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