Contact forms for Svelte
Build a working contact form for your Svelte app with no backend. It is a single-file component with bind:value fields and an on:submit|preventDefault handler that posts to Formpaste. Preview it live, copy the code in your styling of choice, and submissions land in your inbox - spam filtered.
How to create a Svelte form
- 1
Create a form in your Formpaste dashboard and copy its access key.
- 2
Copy the Svelte single-file component above into your app and pick your styling.
- 3
Replace YOUR_ACCESS_KEY_HERE with your access key, then deploy.
Prompt for your AI coding agent
Add a Formpaste contact form to my Svelte app. Use a single-file component with a <script> block, bind:value fields, and an on:submit|preventDefault handler that POSTs as application/x-www-form-urlencoded (URLSearchParams) to https://api.formpaste.com/submit with a hidden access_key input. No backend.Or connect the Formpaste MCP server to Claude Code, Codex, Cursor, Claude Desktop, VS Code, or any mcp-remote client. See the setup guide.
A component and a fetch
A Svelte contact form is a single-file component with bind:value on the fields
and an on:submit|preventDefault handler that posts to Formpaste. There is no API
route, no mailer, and no database - you copy the component, drop in your access
key, and submissions arrive in your inbox. It works the same in a plain Svelte app
or inside SvelteKit.
Handling the response
The endpoint returns JSON (success, message, id). Await the fetch and set a
reactive status variable to show your own success or error message, or set a
redirect URL in your dashboard settings and let Formpaste send the visitor to a
thank-you page with no extra client code.
Svelte 4 or Svelte 5
The examples use a <script> block with a plain status variable, which works in
every Svelte version. On Svelte 5 you can reach for runes like $state, but
Formpaste only cares about the POST, so use whichever style your project follows.
How it works
Three simple steps for form submissions to land in your email inbox.
Create your form, set your form's action URL to Formpaste's endpoint, and add your access key.
Create your form
Sign up, verify your email, and create an access key in your dashboard.
Copy the code
Paste the snippet above into your project. Pick CSS or Tailwind to match your site.
<script lang="ts">
let status: "idle" | "sending" | "ok" | "error" = "idle";
async function onSubmit(e: SubmitEvent) {
status = "sending";
const form = new FormData(e.target as HTMLFormElement);
const res = await fetch("https://api.formpaste.com/submit", { method: "POST", body: new URLSearchParams(form as any) });
status = res.ok ? "ok" : "error";
}
</script>
{#if status === "ok"}
<p>Thanks - your message was sent.</p>
{:else}
<form on:submit|preventDefault={onSubmit} class="mx-auto flex w-full max-w-md flex-col gap-4 rounded-xl border border-gray-200 bg-white p-6 shadow-sm dark:border-gray-800 dark:bg-gray-950">
<input type="hidden" name="access_key" value="YOUR_ACCESS_KEY_HERE">
<label class="flex flex-col gap-1.5 text-sm font-medium text-gray-900 dark:text-gray-100">Name
<input type="text" name="name" placeholder="Your name" required class="rounded-md border border-gray-300 bg-white px-3 py-2 text-sm text-gray-900 shadow-sm outline-none focus-visible:ring-2 focus-visible:ring-gray-900 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 dark:focus-visible:ring-gray-100" />
</label>
<label class="flex flex-col gap-1.5 text-sm font-medium text-gray-900 dark:text-gray-100">Email
<input type="email" name="email" placeholder="you@example.com" required class="rounded-md border border-gray-300 bg-white px-3 py-2 text-sm text-gray-900 shadow-sm outline-none focus-visible:ring-2 focus-visible:ring-gray-900 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 dark:focus-visible:ring-gray-100" />
</label>
<label class="flex flex-col gap-1.5 text-sm font-medium text-gray-900 dark:text-gray-100">Message
<textarea name="message" required class="min-h-28 rounded-md border border-gray-300 bg-white px-3 py-2 text-sm text-gray-900 shadow-sm outline-none focus-visible:ring-2 focus-visible:ring-gray-900 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-100 dark:focus-visible:ring-gray-100"></textarea>
</label>
<button type="submit" class="w-full rounded-md bg-gray-900 px-4 py-2 text-sm font-medium text-white shadow-sm transition-colors hover:bg-gray-800 disabled:opacity-60 dark:bg-white dark:text-gray-900 dark:hover:bg-gray-200" disabled={status === "sending"}>Send</button>
{#if status === "error"}<p>Something went wrong. Please try again.</p>{/if}
</form>
{/if}Add your access key
Replace the placeholder with your access key to start receiving submissions.
<input type="hidden" name="access_key" value="YOUR_ACCESS_KEY_HERE">Contact forms for Svelte FAQ
Paste a form. Get submissions.
Instantly without setting up any backend, servers or databases. 250 submissions/mo free - no credit card.
What you get with Formpaste
No server, no DNS
Point your form at Formpaste - no backend, no DNS, no email server to run.
Spam filtered automatically
Heuristics + a quarantine folder you control. Real messages always get through.
Quarantine you control
Suspicious submissions land in a folder you review - nothing silently dropped.
Built for AI agents
An MCP server your coding agent calls to create a form and wire it up.
Copy-paste components
Accessible, copy-paste form code for HTML, React, TypeScript, JavaScript, and Astro.
Simple dashboard
Manage forms, inbox, quarantine, and delivery from one place.