ISP Postmaster sites

A number of ISPs have email information and postmaster sites available. I found myself compiling a list of them for a client today and thought that I would put up a list here.

How to improve AOL delivery
40 email companies

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Tools for monitoring email

A number of groups provide tools for monitoring email performance.
Some of these tools are provided by ISPs, like Hotmail and AOL have postmaster webpages. Hotmail also provides things like SNDS so you can monitor what Hotmail is seeing about your network.
Al has a new blacklist stats center over at DNSBL.com. Of interest is the accuracy of some of the widely used lists like Spamhaus, Spamcop, and PSBL. Other lists like FiveTen were wildly inaccurate. In fact, Al has shown that blocking mail from any IP with a 7 in it is more accurate (more spam hits, less non-spam hits) than FiveTen.
ReturnPath provides free reputation lookup and monitoring based on the data they acquire.

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Busy Busy.

Getting ready to head to MAAWG next week. We leave for the plane in a couple hours. I expect there will be some interesting information coming out of the talks and sessions and will be sharing some of the more interesting bits throughout the week.
Also, Steve has written a new tool to visualize blacklists. He’s put up a beta version. It still has a few bugs and missing features, but there are already some interesting patterns in XBL data with it.
The demo installation only displays XBL data (rather than letting you overlay multiple datasets) and is missing search and bookmarking, amongst other things. Enough disclaimers yet?

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How to improve AOL delivery

DMNews interviewed Charles before he left AOL about the state of spam and the challenges for ISPs and how that affects senders. The article was published this week. In it he talks about

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