How to design your email
http://blog.streamsend.com/2009/01/ten-tips-for-email-marketing-design.html
http://www.marketingvox.com/how-to-effective-email-marketing-037608/
http://www.brighthub.com/internet/web-development/articles/36967.aspx
http://www.mailchimp.com/articles/stupid-html-email-design-mistakes/
Dedicated IP Addresses
http://www.glockeasymail.com/dedicated-shared-ip-address-email-marketing/
http://www.logicsblog.com/index.php/site/email_marketing_tip_dedicated_ip_adresses/
Self hosted email software
http://bulk-email-marketing-articles.com/software.htm
http://www.compmaui.com/tag/email-marketing-software
When is the best time to send?
http://www.email-marketing-reports.com/tactics/best-time-to-send/
http://www.mediapost.com/publications/?fa=Articles.showArticle&art_aid=63759
Improving Your Registration Page / Techniques for acquire new subscribers
http://www.email-marketing-reports.com/listacquisition.htm
http://www.setfiremedia.com/blog/how-to-increase-email-signups
HTML vs. text messages
http://www.webpronews.com/expertarticles/2006/12/19/email-marketing-html-vs-plain-text
http://www.freemarketingzone.com/email-marketing/html-email-pros.html
Working with segments
http://www.email-marketing-reports.com/tactics/segmentation/
http://emailmarketingpro.org/targeted-email-marketing-segmentation-and-personalization/
Using custom fields for personalization
http://www.campaignmonitor.com/blog/post/2645/smart-ways-to-use-custom-fields/
Message text to image ratio
http://email-marketing.me/html-email/html-guidelines/
Spam buttons and complaints : beat the spam button
http://www.aweber.com/blog/email-deliverability/spam-buttons-and-complaints.htm
Subject line A/B split testing
http://www.mailchimp.com/articles/how_a_b_split_testing_works/
http://emailmarketingroi.wordpress.com/2008/09/17/email-marketing-ab-split-tests-mean-continual-email-marketing-roi-improvement/
http://www.marketingexperiments.com/improving-website-conversion/ab-split-testing.html
Enabling auto-responders
http://www.tsworldofdesign.com/email/autoresponders.htm
http://www.listbotspro.com/targeted-email-marketing-2.html