• Automated Email
• Branding
• Budgeting
• Deliverability
• Deployment Times
• Design
• Email Usage
• Frequency
• From Lines
• HTML vs. TEXT
• Inbound Marketing
• International Stats
• Landing Pages
• Lead Generation
• Mobile
• Newsletters
• Non-Profit
• Online Retailers
• Outsourcing
• Personalization
• Podcasts/Webcasts
• Registration
• Research
• Response Metrics
• ROI
• Segmentation
• Social Interaction
• Spam
• Stats by Industry
• Strategy
• Subject Lines
• Testing
• Transactional
• Vs. Other Marketing

StatShare

StatShare, a must read for all email marketing pros.

"If it's statistics you want, always start with EmailStatCenter.com, a clearinghouse for email metrics" - "The Email Diva", MediaPost's Email Insider

Only a third of responding companies (32%) carry out a regular amount of testing for email marketing. One quarter of organisations say they infrequently carry out testing, while 13% don't test at all. - Econsultancy "Email Marketing Census 2011" (2011)

51% of US online marketers currently use email A/B testing strategy, with an additional 25% planning on doing so in the future. - Lyris (2010)

48% of marketers test subject lines on a regular basis. - MarketingSherpa (2010)

47% of marketers regularly test offers/Calls to Action in their emails. - MarketingSherpa (2010)

56% of the world's heaviest online advertisers revealed that they had budgeted significantly for landing-page A/B tests in 2007. -MarketingSherpa (2007)