If your email marketing budget - or allocated staff time - is tighter than you'd like, how can you figure out which tests are worth conducting … and which won't move the needle?

Last month MarketingSherpa's research team conducted the largest-ever survey of email marketers in the world - with 3,637 respondents. One of our critical questions was: Which creative email tests give the best ROI (return on investment)?

We chose the six most-common creative tests to ask about. The biggest result - testing in and of itself increases ROI. In every case more than 50% of marketers improved ROI (even if only moderately) by testing.

My favorite result - copy writing really, really matters. The top three best ROI tests were more to do with words (copy, offer, subject line) than they were with design or graphics.

Get the full story at MarketingSherpa