Microsoft has posted a handy guide for improving your deliverability to Hotmail, Windows Live Mail, and Outlook.
Interesting stuff about their built-in SmartScreen technology (which just made the news here), used to detect spam and phishing scams. Also, how they use Brightmail (basically a spam filter for spam filters), and they recommend using ReturnPath’s SenderScore service.
They even have some handy tips for designing HTML email for Outlook 2007, like:
- Keep your designs less than 600 pixels wide
- Only use inline CSS
- No background images
And other stuff we’ve always recommended. In fact, all their design suggestions are already included in MailChimp’s built-in templates (just in case you haven’t found a reason to give them a try yet).