@wilbertliu Thanks for asking. :)
Right now Receiptful is 100% about leveraging the marketing opportunity that e-mail receipts presents. All of our data shows that a) customers are engaging with stores via their receipts; and b) that these interactions create additional revenue.
Beyond that I won't share too much of what we have planned on our roadmap. We will however be looking at other interaction points and build complimentary (and paid) tools for those.
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