EmailJS

Overview

EmailJS lets you send emails directly from the browser (no backend needed) — connect a mail service (Gmail, Outlook, your SMTP), create a template, and POST to their API. Auth is a free public key plus a service/template ID.

Note (verified 2026-08): the API responds (a GET to a non-existent path returns Express-style 404s) — sending uses POST /api/v1.0/email/send.

Quick Start

Send via the REST API:

curl -X POST "https://api.emailjs.com/api/v1.0/email/send" \
  -H "Content-Type: application/json" \
  -d '{
    "service_id": "YOUR_SERVICE_ID",
    "template_id": "YOUR_TEMPLATE_ID",
    "user_id": "YOUR_PUBLIC_KEY",
    "template_params": { "to_name": "Alice", "message": "Hello!" }
  }'

Or use the JS SDK:

<script src="https://cdn.jsdelivr.net/npm/@emailjs/browser"></script>
<script>
  emailjs.send('YOUR_SERVICE_ID', 'YOUR_TEMPLATE_ID', { message: 'Hi' }, 'YOUR_PUBLIC_KEY');
</script>

Authentication

• Register at emailjs.com → add an email service (Gmail/Outlook/SMTP) → create a template.
• The public key (user_id) is safe for client-side use — EmailJS is designed for it.

Rate Limits & Notes

• Free tier: 200 emails/month (check current docs); paid plans scale.
• Emails go through EmailJS servers using your connected service credentials.
• Works with Gmail, Outlook, Yahoo, and custom SMTP.
• Popular for contact forms, password-reset mocks, and static-site email — no backend required.

FAQ

Is EmailJS free? Free tier: 200 emails/month; more is paid.

Is it safe to expose the key? Yes — EmailJS is designed for client-side use with a public key.

What services can I connect? Gmail, Outlook, Yahoo, and custom SMTP.