Return Path discusses that a high (>80) SenderScore is correlated with inbox delivery at Gmail.
August 26, 2010
Gmail and SenderScore
26August
August 25, 2010
Botnets and viruses and phishing, oh my!
25August
MessageLabs released their monthly report on email threats yesterday. Many media outlets picked up and reported that 41% of spam was from a the Rustock botnet. Other highlights from the report include: Spam accounts for over 92% of all email. 95% of spam was sent from botnets at the end of July 2010. One in 327 emails contains malware and one in 363 emails is a phish. The number of rustock...
July 29, 2010
Freemail opens
29July
Justin Coffey commented on my check your assumptions post pointing out his data on opens related to ISPs. He says:
I can say that users at webmail are easily as likely to click on a message that they have opened than users at pay-for ISPs.
Who else collects data on opens per ISP? And Monkeys, I’m looking at you, I know you have this data.
July 25, 2010
Lycos delivery problems
25July
Lycos has had some ongoing problems this week. Their alert on the issue says: Some Lycos Mail users may be experiencing poor performance of their email service, including slow loading times while viewing or responding to emails and slower than usual mail delivery. The Lycos team is aware of these issues and are working to resolve the problems for all users. […] Additional equipment for...
July 16, 2010
Getting removed from an ISP block
16July
A question came up on a mailing list about how long it typically took to resolve a spam block at an ISP. I don’t think that question actually has a single answer, as each ISP has their own, special, process. ISPA takes 5 minutes. You fill out a form, it runs through their automated system and you’re usually delisted. ISPB asks a lot of questions in their form, so it takes about 15...
July 14, 2010
Delivery consulting: it's all about the credibility
14July
A few months ago I found a great blog post written by an ER doctor about how to convince other doctors to come in and deal with a patient in the middle of the night. There are quite few similarities between his advice and the advice I would give delivery experts, ISP relations folks and ESP representatives when dealing with ISPs and spam filtering companies. Credibility is the sole currency you...
May 26, 2010
The importance of data hygiene
26May
Over the weekend, one of the major ISPs purged a lot of abandoned accounts from their system. This has resulted in a massive increase in 550 user unknown bounces at that ISP. This ISP is one of those that uses bounces to feed into their reputation system and the purge may cause otherwise good senders to be blocked temporarily. Talking to clients and other industry folks, it looks like the...
May 21, 2010
Delivery problems are not all spam related
21May
Not every delivery failure is due to poor reputation or spam. Sometimes ISPs just have problems on their mailservers and so mail doesn’t get through. It’s often hard for delivery experts (and their bosses and their customers and their clients) to watch email delays or rejections without being able to do anything about it. Sometimes, though, there is nothing to do. The rejections are...
March 26, 2010
This is why the ISPs throw up their hands at senders
26March
I recently saw a question from an ESP rep asking if anyone had a personal contact at a particular ISP. The problem was that they had a rejection from the ISP saying: 571 5.7.1 too many recipients this session. The ESP was looking for someone at the ISP in order to ask what the problem was. This is exactly the kind of behaviour that drives ISPs bonkers about senders. The ISP has sent a perfectly...
March 25, 2010
Return Path Changes certification standards
25March
Return Path recently announced changes to their certification program. They will no longer be certifying 3rd party mailers. We will no longer certify mail streams which are strictly comprised of “third-party marketing” email (e.g., email-based advertising that is not accompanied by content and is sent on behalf of a different company than the one to which the end user subscribed in...
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