News from MAAWG

During MAAWG a number of companies in the email space announce new initiatives, mergers, products and the like. This MAAWG is no different.
Spammers adjust to security trends. This is not really news, spammers have been adjusting to new security measures since folks started blocking from: addresses back in ’95 and ’96. The tactics are different and developing, but for every security hole that is blocked, spammers will search for another hole to exploit. The unfortunate truth is that end user is the weak point, and spammers and scammers are very very good at social engineering.
Spam statistics stalemate. Spam is still accounting for approximately 90% of all email traffic.
Cloudmark acquires Bizanga. I talked to some of the Cloudmark folks and they seem very excited with their acquisition of the Bizanga MTA and email technology.
Bizanga Storage announced. Bizanga Store is a scalable storage system brought to you by some of the people who were instrumental in building the Bizanga MTA acquired by Cloudmark.
ReturnPath announced partnership with RPost. Yet more ongoing changes in the certification field.

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20% of email doesn't make it to the inbox

Return Path released their global delivery report for the second half of 2009. To put together the report, they look at mail delivery to the Mailbox Monitor accounts at 131 different ISPs for 600,000+ sends. In the US, 20% of the email sent by Mailbox Monitor customers to Return Path seed accounts doesn’t make it to the inbox. In fact, 16% of the email just disappears.
I’ve blogged in the past about previous Return Path deliverability studies. The recommendations and comments in those previous posts still apply. Senders must pay attention to engagement, permission, complaints and other policy issues. But none of those things really explain why email is missing.
Why is so much mail disappearing? It doesn’t match with the philosophy of the ISPs. Most ISPs do their best to deliver email that they accept and I don’t really expect that ISPs are starting to hard block so many Return Path customers in the middle of a send. The real clue came looking at the Yahoo numbers. Yahoo is one of those ISPs that does not delete mail they have accepted, but does slow down senders. Other ISPs are following Yahoo’s lead and using temporary failures as a way to regulate and limit email sent by senders with poor to inadequate reputations. They aren’t blocking the senders outright, but they are issuing lots of 4xx “come back later” messages.
What is supposed to happen when an ISP issues a 4xx message during the SMTP transaction is that email should be queued and retried. Modern bulk MTAs (MessageSystems, Port25, Strongmail) allow senders to fine tune bounce handling, and designate how many times an email is retried, even allowing no retries on a temporary failure.
What if the missing mail is a result of senders aggressively handling 4xx messages? Some of the companies I’ve consulted for delete email addresses from mailing lists after 2 or 3 4xx responses. Other companies only retry for 12 – 24 hours and then the email is treated as hard bounced.
Return Path is reporting this as a delivery failure, and the tone of discussion I’m seeing seems to be blaming ISPs for overly aggressive spamfiltering. I don’t really think it’s entirely an ISP problem, though. I think it is indicative of poor practices on the part of senders. Not just the obvious permission and engagement issues that many senders deal with, but also poor policy on handling bounces. Perhaps the policy is fine, but the implementation doesn’t reflect the stated policy. Maybe they’re relying on defaults from their MTA vendor.
In any case, this is yet another example of how senders are in control of their delivery problems. Better bounce handling for temporary failures would lower the amount of email that never makes it to the ISP. This isn’t sufficient for 100% inbox placement, but if the email is never handed off to the ISP it is impossible for that email to make it to the inbox.

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Important notification spammers break the law

I’m currently being inundated at multiple address with spam advertising spamming services. Most of these notices have the subject line: IMPORTANT NOTIFICATION. The text includes:

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TWSD: keep spamming even when they say they'll stop

About a month ago I posted about receiving spam from a psychic attempting to sell me candles and stuff. The spammer was sending mail from a company called “Garden of Sound” using an ESP called OnLetterhead. A brief investigation led me to believe that unsubscribing from the mail was not going to do anything.
The post prompted an email from Scott B. the VP of Marketing of the company that is responsible for OnLetterhead. I replied to his email, pointing out a number of things he was doing that made his business look like an ESP front for spammers.
After he received my mail he called me to talk to me about the content of my post and the email and to assure me they were immediately implementing one of my suggestion (that they not put a generic “here’s how to unsubscribe” link on their 1000+ link domains, instead have those actually point to their AUP and corporate pages). He also assured me they took my complaint seriously and I would no longer be receiving email.
Guess what?
Garden of Sound is still spamming me from OnLetterhead. They’ve not even managed to implement the changes they pledged would be rolled out the same week as my blog post. Sure, the domain I’m getting spam from is different, the physical postal address is different, the product is different, the friendly from is different. But the preheader still says “this mail sent by Garden of Sound.” It’s all the same list, it’s all the same company, it’s all the same group of spammers.
Despite Scott’s attempt to convince me he wasn’t a spammer, it seems my initial impression was right. OnLetterhead is simply are a company attempting to look like they’re legitimate without actually taking any responsibility for the email going out from their network. They can’t even manage the bare minimum.
It’s companies like this that give the rest of ESPs a bad name.

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