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)
7 out of 10 marketers report regularly testing subject lines. – MarketingSherpa, Email Marketing Benchmark Guide (2006)
62% test copy. – MarketingSherpa, Email Marketing Benchmark Guide (2006)
Link placement, personalization and the “From” line are tested by 46% of marketers. – MarketingSherpa, Email Marketing Benchmark Guide (2006)
39% test the offer. – MarketingSherpa, Email Marketing Benchmark Guide (2006)
Emails offering one service compared with emails offering a choice of several services bring higher conversions. – Marketing Experiments (2006)