Thoughts on SenderScore

Kevin Senne posted over on the Oracle blog about how we need to stop caring about SenderScore and why it’s not as useful a metric as it used to be.
I can’t argue with anything he’s said. I think there is way too much focus on IP reputation and SenderScore. There’s so much more to deliverability than just one or two factors.
In fact, if you’ve been to any of my recent webinars or talks you will probably have seen some version of this image in my slides:
SenderScore99_cropped
Basically, just because you have a great SenderScore doesn’t mean you’re going to have good delivery.  Likewise, having a poor SenderScore doesn’t mean your mail is destined to be undelivered.
I tell clients, and people who ask about SenderScore that it reflects the data that Return Path gets, run through their proprietary algorithms to come up with a score. And that score is relevant for those ISPs that pay attention to it. But most ISPs make the deliver or not deliver decision based on their own internal data, not on the IPs SenderScore.

What’s more important for deliverability is the email reputation. Email reputation combines content reputation, link reputation, IP reputation and sender reputation into one score. Emails with poor reputation are often blocked during the SMTP transaction. After mail is accepted it goes through the personalized filters and then it’s delivered to the inbox or the bulk folder.
NewDeliverabilityModel
Filters are complex. I’m not ready to give up any available data, including the SenderScore, when troubleshooting delivery problems for my clients. But I also don’t work to fix a client’s SenderScore. I work to fix a client’s deliverability. Sometimes that improvement is shown in SenderScore improvements. Sometimes it’s not.

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I do not think that means what you think it means

Yesterday, I looked at the analysis of ESP delivery done by Mr. Geake. Today we’ll look at some of his conclusions.
“Being blacklisted most likely suggests that sender IP either sends out to a great deal of unknown or angry recipients.” That’s not how most blocklists work. Most blocklists are driven by spam traps or by the personal mailboxes of the list maintainers. The only blocklist that took requests from the public was the old MAPS RBL, and I don’t believe that is the case any longer.
Blocking at ISPs is often a sign of sending out a lot of mail to unknown or angry / unengaged recipients. But most ISPs don’t make their lists public. Some allow anyone to look up IP addresses, and if we had the IPs we could check. But we don’t, so we can’t.
“[…] if you share this IP with Phones4U then only 62% of your emails will be accepted by a recipient’s email server. That’s before they hit the junk filter. I wouldn’t want to pay for that.” This conclusion relies on the Sender Score “accepted rate” number. Accepted Rate is a figure I don’t rely on for much. I’ve never been able to reconcile this number with what client logs tell me about accepted rate. For instance, I have one IP address that has a 4.4% acceptance rate. But I know that 19 out of 20 emails from this IP do not bounce. In fact, it’s rare to see any mail from this IP bounce.
The one thing that Mr. Geake gets right, in all of this, is that if you’re on a shared IP address with a poor sender, then you share that sender’s reputation. Their reputation can hurt your delivery.
But a dedicated IP isn’t always your best bet, either.  Smaller senders may not have the volume or frequency required to develop and keep a good reputation on an static IP. In these cases, sharing an IP address with similar senders may actually increase delivery.
For some senders outsourcing the email expertise is a better use of resources than dedicating a person to managing email delivery. For other senders, bringing mail in house and investing in staff to manage email marketing is better.
Tomorrow: how do you really evaluate an ESP?

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Images at Yahoo

For a while, Yahoo was giving preferential “images always on” treatment to Return Path Certified senders. The tricky part of this was the senders had to register a DKIM selector key with Yahoo. I had a lot of (somewhat rude) things to say about this particular design decision.
Over the last few months, a number of senders have complained about being unable to update their selector keys with Yahoo. (Insert more rude comments about how broken it is to use the selector as a part of reputation.) Around the same time, a few of us have noticed that Yahoo seems to be turning on a lot of images by default. A few of the ESP delivery folks collaborated with me on checking into this. They could confirm that images were on by default for some of their customers without certification and without selector key registration.
Earlier this week, Return Path sent out an email to users that said that Yahoo would no longer be turning images on by default for Return Path Certified IPs.

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Do Gmail tabs hurt email marketing?

Earlier this year, Gmail rolled out a new way for users to organize their inbox: tabs. Tabs were an attempt by Gmail to help Gmail users organize their mail, particularly programmatically generated email like social media alerts and marketing mail. While many of us took a wait and see approach, a number of email marketers took this as one of the 7 signs of the apocalypse and the end of email marketing as we know it.
Dozens of marketers wrote article with such titles as “7 ways to survive Gmail tabs” and headlines that declared “Thanks to Gmail’s new tabs, promotional e-mails are now shunted off to a secondary inbox. If you rely on e-mail marketing, you should be worried.” Marketers large and small responded by sending emails to recipients begging them to move marketing mail out of the promotions tab and into the inbox.
A number of bloggers, reporters and marketers, myself included, tried to tame the panic. Not because we necessarily supported tabs, but because we really had no insight into how this would affect recipients interacting with email.
This week Return Path published a whitepaper on the effect of Gmail tabs on email marketing (.pdf link).
Not only did Return Path’s research show little negative effect of tabs, they actually saw some positive effects of tabs on how recipients interact with commercial email. Overall, the introduction of tabs in the gmail interface may be a improvement for email marketers.

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