For example, you may analyse the journeys on your website and identify that people who visit a page is more likely to purchase than those who do not visit that page. With behavioural data pointing towards the potential for this page, it would be worth testing whether offering a bespoke content message or discount offer to users when they arrive at that page drives conversions. It could be that your customers have left items in their baskets and not completed their purchase, like this example here from Nordstrom:
If you're inviting readers to download an ebook, for example, and you have a picture of the ebook included in the email, don't just hyperlink the text next to the image telling people to "download it here." Hyperlink the ebook's picture, too. People are drawn to images much more commonly than text, and you want to give your email subscribers as many options to get your ebook as you can.
When you’re working with marketing emails, always think about recipients on an individual level. Consider where each recipient is on their journey with you. Notice opens, click-throughs – any engagements or behaviours, and pin down behavioural patterns which often point to purchase. Every time you send out an email campaign, you'll be collecting behavioural data, use it to inform your email strategy.