Here are a few of the best resources on Email Marketing
Email Marketing Thought Leaders (UK)
http://www.dma.org.uk Formed in 1992, the Direct Marketing Association UK is Europe’s largest trade association in the marketing and communications sector. Get the PDF: New Email Measurement Standards
http://www.emarketer.com Founded in 1996, eMarketer has become “the first place to look” for unbiased research and trend analysis on digital marketing and media.
http://econsultancy.com Founded in 1999, Econsultancy has grown to become the leading source of independent advice and insight on digital marketing and ecommerce.
http://www.nma.co.uk new media age is the UK’s only weekly magazine covering the business of interactive media.
http://www.emailinstitute.com The Email Institute, is a best practices site powered by Epsilon. It was founded with the purpose of educating marketers on email marketing best practices and how it intersects with other channels (Mobile, Social Media, Brick and-Mortar, Catalog, etc).
Best of Email Marketing Blogs
http://www.email-marketing-reports.com Mark Brownlow, an independent web publisher, writer and accredited journalist
http://www.b2bemailmarketing.com Tamara Gielen is an independent email and digital direct marketing consultant with over 10 years of experience in online, email and direct marketing.
http://dmaemailblog.com Blog from the direct Marketing Association
http://davechaffey.com Total-E-mail-Marketing Dave is an author, consultant and trainer specialising in E-commerce and E-marketing education and guidance.
Unique Email Marketing Related Services
http://www.theemailguide.com compare Email Marketing Services
http://www.whichesp.com Email Marketing Services Comparison site
http://www.whichtestwon A/B testing results site
http://www.litmusapp.com Unique script to let you know if your email was read or deleted without reading
http://fivesecondtest.com Simple, instant feedback on your designs. Five second tests help you easily identify the most prominent elements of your user interfaces
http://balsamiq.com Create Email template mock-ups in minutes