Several months ago, I released a new major version of my indie software product and needed to send new license keys to customers. I had a spreadsheet of customers and a new license key for each and just needed to email these keys to the customers. It’s a one-person operation and I’m not using any fancy CRMs or anything. Luckily(?), I’m old enough to remember “mail merge” using Microsoft Word, Excel, and Outlook and, surprisingly, it still works exactly the same as I remember from 20+ years ago. Even if that’s what you are using for your email there’s one major problem: this method can only send from your primary email address. And that didn’t work for me. In the Google ecosystem you, apparently, can write some Apps Script to implement mail merge. Not sure how universal that is and how well it works. Definitely doesn’t sound like a purpose-built solution. Then there are some browser extension-based tools that do some “magic” in gmail — thank you, but no, thank you. So, as any real developer would do, I just whipped up my own tool 😊 And as any real "software entrepreneur" I needed to make it availbleto the world 😂 Even though there's no business model behind it - it's just a free app for Windows and macOS.

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