I think the confusion is coming from the framing of "Email API for Developers Using React" as the title for this post. React has nothing to do with "an email API" as far as I can see.
Your web-site is more clear in that it shows a Node.js snippet (and other environments, although funnily not just in the browser?). Then the site goes on to talk about the React components.
Perhaps "Email API for Developers, with React components" would resolve the issue. The title as it stands suggests I wouldn't be interested in this at all since I'm not using React. But actually, as an e-mail API, I would be (e.g. with a Hugo site).
Thank you, that's a lot more clear. I was going to click through to find out how they protect the mail server secrets when sending emails from the react based client.
Your web-site is more clear in that it shows a Node.js snippet (and other environments, although funnily not just in the browser?). Then the site goes on to talk about the React components.
Perhaps "Email API for Developers, with React components" would resolve the issue. The title as it stands suggests I wouldn't be interested in this at all since I'm not using React. But actually, as an e-mail API, I would be (e.g. with a Hugo site).