Despite social media’s growing presence, email remains the preferred method of communication among both brands and consumers. With this in mind, it’s important to approach your marketing efforts with a set strategy in place.

An infographic recently released by Marketo displays top performers’ approach to email marketing success. According to the results, top performers in brand marketing report spending, on average, 22% of their time on strategizing, compared to average performers’ 14%.

With the sheer volume of emails landing in consumers’ inboxes these days, it’s more important than ever to test all email elements for optimal results. The most tested portion of the email remains the subject line, at 72%. Overall messaging and content trails a bit behind at 61%, while the “From” line and mobile optimization the farthest, at 26% and 15%, respectively.

Lastly, mobile optimization has become an increasingly vital consideration that many may currently skip over. By the end of 2013, the number of emails opened on mobile is set to pass PC-based email.

You can get a full view of the data below, via Marketo’s Email Cheatsheet: