Posted in Deliverability on 2012/02/07
A week ago a DMARC went public causing a tidal wave of publicity, discussion, and fuzz. Many senders are now asking what they should do with it. In this post I will try to put things in perspective, so senders can judge better what DMARC means for them. First of all, DMARC is not something [...]
Posted in Case Studies, Deliverability, PowerMTA on 2011/11/06
A common question among professional senders is: should I use an Email Service Provider (ESP) or can I send my emails in-house? To find a good answer can be difficult. There are a lot of ESPs and a lot of software vendors ready to help you, but where to get objective advise from? My customers [...]
Posted in Deliverability on 2011/09/11
With regards to email deliverability, the inbox placement rate (IPR) is probably the most important metric. According to industry research the average IPR of permission-based commercial mail is 80%. An alarming figure, which means that 20% bounces, is dropped, or put in junk. So how can you determine how your emails are doing? One solution [...]
Posted in Deliverability on 2010/07/14
Delivering large volumes of email can be difficult. Properly handing the bounces can be even more challenging. To decode, analyze and classify the hundredths of different bounce mail formats is a complex task. To give you an idea what you might encounter, here are some examples of bounces: 421 4.7.1 Intrusion prevention active for [X.X.X.X] [...]
Posted in Deliverability on 2010/03/30
Have you ever asked yourself who clicks on spam, and why? This month the MAAWG released a new report, the 2010 MAAWG Consumer Survey Key Findings Report, which can be downloaded here. The results from respondents give some interesting insights in consumer behavior with regards to spam and email security. The most interesting conclusions I found [...]
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