EmailJS React: How to Send Emails From a Contact Form Without a Backend

The tutorial explains how to build a React contact form with Vite and send messages through EmailJS connected to Mailtrap’s email delivery service, covering account setup, service and template configuration, environment variables, SDK initialization, and form submission with EmailJS’s sendForm method. It shows how templates map form fields to email content and how to support HTML messages, file attachments, and multiple recipients through matching template parameters. It also emphasizes security concerns of client-side email sending, particularly that EmailJS private keys must never be included in React bundles, and recommends serverless functions, reCAPTCHA, authorized-origin restrictions, and multi-factor authentication to reduce credential exposure and spam. As backend-oriented alternatives, it provides examples using Nodemailer over SMTP and the Mailtrap Node.js SDK API, both of which store credentials in server-side environment variables and support plain-text or HTML email delivery.

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