Aye Moah is the Chief of Product and co-founder of Baydin,_an_email productivity company. A few weeks after releasing Boomerang for Gmail to the world, we started receiving inquiries from our users asking how they could donate some money or “tip us” in appreciation of our hard work. We also heard from users who insisted they wouldn’t rely on a free tool as part of their email workflow — after all, free tools disappear all the time!_ Around the same time, our investors and our company accountant started asking us how we planned on feeding ourselves. Putting two and two together,...

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