The first thing I like about Wheelie is that it's very easy to use, you don't need any technical knowledge or software skills in order for your campaigns work as expected - everything can be done from within an intuitive interface which makes things much easier than if they were set up by hand using code etc., even though this isn't really what we're looking at here but rather how simple their service was/is when setting one of them up (as opposed to some other companies). There are also loads more features available such as customizing CTAs with different images depending upon customer data collected so far through emails sent out previously; there may have been others already mentioned above too however these two stand out most due to ease of implementation compared to competitors' services. We've had great success implementing wheelies into existing marketing programs where clients would normally not.