Filtering adjustments at Hotmail

I’ve been seeing a lot of discussion on various fora recently about increased delivery issues at Hotmail. Some senders are seeing more deferrals, some senders are seeing more mail in the bulk folder. Some senders aren’t seeing any changes.
This leads me to believe that Hotmail made some adjustments to their filtering recently. Given some senders are unaffected, this appears to be a threshold change or a calculation change, tightening up their standards. The changes have been around for long enough now it does look like the filtering is working as intended and Hotmail is not going to roll these changes back.
So what can you do to fix delivery of mail that was good enough at Hotmail a few weeks ago and now isn’t?

  1. Look at your data hygiene. Do you have older addresses that haven’t responded in any way recently? Try removing that data from your mailings for a week or two and see if that improves your delivery.
  2. Check your content for URLs that might be advertised or spammed in mail from IPs other than your own. Use domains you have complete control over in all your mail, both for links and anywhere in the text.
  3. Contact recipients through a non email channel and ask them to add your address to their address book.
  4. Look at performance of your lists per acquisition channel, maybe one of your acquisition processes is giving you poor data. Removing these addresses may improve your overall reputation and get your mail into the inbox.

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Link roundup June 18, 2010

Hotmail has released a new version of their software with some changes. Return Path discusses the changes in depth, but there are a couple that senders may find helpful.

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Breaking through the script

In handling day to day issues I use the ISP designated channels. This means I frequently get dragged into long conversations with people, probably outsourced to the far east, who can do nothing beyond send me a boilerplate.
This can be a frustrating experience when the issue you’re trying to deal with is not handled by the script. Generally, by the time someone has come to me for help, they are “off script” and I do need to actually talk to a human to get resolution.
With Hotmail, I’ve found that persistent repeating of very simple phrases will eventually get the issue kicked up to someone who can respond with something beyond another boilerplate. This can take days, but it is possible.
I’ve recently run into a Yahoo issue where I am trying to punch through the script, but have so far been unable to.
One of the services Word to the Wise offers is whitelisting. I collect info from customers, verify that what they’re doing will get them whitelisted at the ISPs that offer it, and then submit the information to the ISPs. Yahoo has recently moved to an online submission form for their whitelisting process, which is great for me. No more creating a giant document and then cutting and pasting the document into an email and then mailing it off.
The problem is, there seems to be a minor problem with the Yahoo Whitelisting submission form. When submitting an online application to Yahoo, they respond with a message that says “this application is not complete.”
I’ve been attempting to break through the script in order to find out what about the application is not complete. The webform has data checking, and you cannot submit a form while leaving any of the questions blank. Asking “what is wrong” when the application is kicked back has resulted in me having multiple copies of the whitelisting submission form.
It’s gotten so frustrating that I’ve escalated to personal contacts, but they can’t explain what’s not complete about the application as submitted online, either.
Has anyone had any success breaking through the Yahoo script? Has anyone managed to get IP addresses whitelisted through Yahoo using the online form?

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Reputation monitoring sites

There are a number of sites online that provide public information about reputation of an IP address or domain name.

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