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Tutanota makes encryption easy
Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.
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SurveyJS
Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.
Go to https://github.com/settings/emails. There is an option called "Keep my email address private".
I have been auditing the privacy of the apps that I use recently. After switching to a more privacy-conscious email provider (Tutanota), I also wanted to review where I publish that email address to.