Newsletter Signup for Carrd (free, no backend)

§ 00Carrd + Newsletter Signupplatform-specific integration guide

Why Carrd developers choose splitforms for newsletter signup

Carrd's embed element lets you inject custom HTML into your one-page site — perfect for a lightweight contact form. Carrd Pro includes a native form feature, but it caps submissions at 100/month on paid plans and lacks webhook delivery. The newsletter signup on this page drops into a Carrd embed, posts to splitforms, and gives you 500 dashboard submissions/month free; Starter adds Slack/Discord notifications. No Carrd Pro upgrade needed for the form to work. The HTML is self-contained — Carrd's minimal runtime handles the display, splitforms handles the backend.

§ 00Quick answerHTML · marketing

Yes — this is the shortest safe path for Carrd.

Use the HTML snippet on this page, keep the newsletter signup fields visible in your Carrd UI, and let splitforms handle delivery, spam filtering, storage, and webhooks.

best implementation

Paste the HTML version, then replace YOUR_ACCESS_KEY.

The posted payload contains your email. Required fields are your email.

native carrd reality

Carrd's Form widget requires Pro Standard ($19/year) just to exist on the page, and even then it doesn't deliver email itself — the form 'works' by posting to an external integration: Mailchimp, SendGrid, Basin, Formspree, etc.

use case fit

Email lists still convert 5-10x social. The newsletter signup form is the single most leveraged piece of your site — pop it up smartly, not annoyingly, and it pays compound interest.

§ 01Newsletter Signup × Carrdwhy this combination, in 80 words

Built for Carrd developers who hate operating a backend.

Splitforms is the form backend for Carrd sites. One POST endpoint, no SDK, no plugin — drop the newsletter signup into a page and ship.

Splitforms is the form backend for Carrd sites. One POST endpoint, spam filtering, and a real dashboard — drop-in, no server, no PHP. Free for 500 dashboard submissions per month; Starter adds email, signed webhooks, exports, and retained uploads; Pro is $5/mo for 5,000.

✦ what you get on the free plan

✓500 form submissions per month
✓2 forms on Free; unlimited forms on Pro
✓Spam protection (honeypot + classifier)
✓Webhooks: Slack, Discord, WhatsApp, custom
✓CSV export of all submissions
✓Email notifications (CC and BCC on Pro)

§ 02Copy-paste codeHTML · 12 lines

Drop into any Carrd project.

Replace YOUR_ACCESS_KEY with your splitforms key, paste into a Carrd page, and ship. No build-time integration required.

form.htmlhtml12 lines

01<form action="https://splitforms.com/api/submit" method="POST">
02  <input type="hidden" name="access_key" value="YOUR_ACCESS_KEY">
03  <input type="hidden" name="subject" value="New newsletter subscriber">
04 
05  <label for="email">Your email *</label>
06  <input id="email" type="email" name="email" placeholder="you@example.com" required>
07 
08  <!-- honeypot — bots fill every field -->
09  <input type="checkbox" name="botcheck" style="display:none" tabindex="-1" autocomplete="off">
10 
11  <button type="submit">Send</button>
12</form>

§ 03Setup3 steps · 60 seconds · zero config

Generate, embed, receive.

Three actions stand between you and your first newsletter signup submission. None of them require a backend, a database, or a CAPTCHA library.

STEP 01GENERATE

Generate a free splitforms key

Sign in at splitforms.com — your access key is created instantly. No credit card, no setup wizard, no SDK to install.

Create your form

key=sk_live_••••••••

STEP 02EMBED

Paste the newsletter signup into your Carrd project

Drop the form snippet into a Carrd page, component, or layout. Replace YOUR_ACCESS_KEY with the key from your dashboard. The form action is a hard-coded URL — no env vars or build-time wiring needed.

snippethtml

<form action="https://splitforms.com/api/submit" method="POST">
  …
</form>

STEP 03RECEIVE

Receive submissions

Dashboard updates live on Free. Starter adds email delivery, signed webhooks, CSV export, Slack/Discord forwarding, and BCC to your team.

inbox · 1 newjust now

FROM contact@yoursite.com

New newsletter subscriber

Maya Iyer maya@studio71.co

Loved the demo — quick question about pricing on the 3-year plan. Are usage limits per project or account-wide?

§ 03bNewsletter Signup Form (Email Capture)template-specific playbook

The reason this newsletter signup exists.

Webhooks into ConvertKit / Mailchimp / Substack / Beehiiv / Buttondown.

why it matters

Newsletter conversion benchmarks haven't moved much: ConvertKit / Substack landing pages convert at 1-2% of visitors, popup forms at 2-4%, content-upgrade lead magnets at 8-15%. The form itself is trivially simple (email field, optional name) but where it lives matters — exit-intent popup, scroll-triggered slide-in, footer inline, content-end inline all behave differently. Push the submission to your ESP (Mailchimp / ConvertKit / Substack / Beehiiv / Buttondown) via webhook so the welcome email fires automatically. GDPR / CASL require explicit consent — a checkbox or unbundled-consent text under the form covers it for EU and Canadian visitors.

route the submission

01

Pick the form placement

Popup (highest volume, also highest annoyance — set scroll or exit-intent triggers), inline footer (low volume, low friction), content-end inline (best conversion-quality combo).

02

Push to your ESP

Webhook the email to ConvertKit / Mailchimp / Substack / Beehiiv / Buttondown. Each has either a native webhook receiver or a Zapier connector. Welcome email fires automatically on add.

03

Add GDPR / CASL consent

EU visitors need explicit consent — add a 'I want to receive emails from [your brand]' checkbox or unbundled-consent text under the email field. Required text varies by jurisdiction; consult your privacy lawyer if in doubt.

§ 03cCarrd production notesnative path · deploy · gotchas

What changes when this newsletter signup lives in Carrd.

These notes come from the Carrd platform registry and are rendered on this template page so crawlers see the framework-specific answer without opening a separate guide.

without splitforms

Carrd's Form widget requires Pro Standard ($19/year) just to exist on the page, and even then it doesn't deliver email itself — the form 'works' by posting to an external integration: Mailchimp, SendGrid, Basin, Formspree, etc. So the question isn't 'native vs splitforms' but 'which third-party backend do you wire up?'. Mailchimp is overkill (and surprisingly expensive once your list grows); Basin and Formspree limit free submissions; SendGrid requires DNS verification. Splitforms is the same shape of integration (Type: Custom, Method: POST, Action: a URL) at a better free tier and with built-in spam filtering. Carrd's Form widget settings don't change.

deploy notes

Carrd publishes to a *.carrd.co subdomain on every plan; Pro Standard adds a custom domain. The form posts to splitforms from the browser, so neither subdomain nor custom domain matters for delivery. Lock the splitforms access key to BOTH the *.carrd.co URL and your custom domain — Carrd serves the same content under both, with different Origin headers. Carrd's Designer preview never actually POSTs; you have to publish (free) and submit from the live URL to test. Embed elements bypass Carrd's CSS, so the form will look browser-default unless you inline styles.

Carrd gotcha

Pro Standard plan still required for Custom form Type

Carrd's free plan and Pro Lite don't expose the Form widget at all. Pro Standard ($19/yr) unlocks the Form widget with Type → Custom. Splitforms doesn't change Carrd's plan requirements — it just fills in the backend that Carrd doesn't ship.

Carrd gotcha

Embed element forms don't inherit Carrd's site styles

If you paste raw HTML via an Embed element, your form will look like browser-default — no Carrd typography, no site colors. Use the native Form widget for styling, then add a hidden access_key field via Custom fields.

Carrd gotcha

Carrd's success message + splitforms redirect can fight each other

Carrd's Form widget has a built-in success message that shows on 2xx response. If you also set a redirect field in the form, the user sees the success blip then redirects mid-message. Pick one: redirect via splitforms OR Carrd's success text.

Carrd gotcha

The form widget's Field labels don't match input names by default

Carrd uses friendly labels like 'Your name', but the actual input name attribute is name-1 or similar unless you set Custom in the field settings. Set the Custom name to name, email, message — splitforms uses the input names as keys in your inbox.

PATTERN A

Pattern A — native Form widget set to Custom type

In the Form widget's settings, set Type to Custom, Method to POST, Action to the splitforms URL. Add a hidden field access_key via the Custom Fields tab. Carrd handles the styling and mobile layout; splitforms handles delivery. Use the same wiring for the newsletter signup fields on this page.

pattern-a.htmlhtml8 lines

01<!-- Carrd auto-generates this on publish: -->
02<form action="https://splitforms.com/api/submit" method="POST">
03  <input type="hidden" name="access_key" value="YOUR_ACCESS_KEY" />
04  <input type="text"  name="name" placeholder="Name" required />
05  <input type="email" name="email" placeholder="Email" required />
06  <textarea name="message" placeholder="Message" required></textarea>
07  <button type="submit">Submit</button>
08</form>

PATTERN B

Pattern B — Embed element with full HTML control

Drop an Embed element into a Carrd section and paste raw HTML. Loses Carrd's auto-styling but lets you add a honeypot, multi-field validation, or custom redirect. Useful for waitlist or job-application forms that exceed the Form widget's capability. Use the same wiring for the newsletter signup fields on this page.

pattern-b.htmlhtml9 lines

01<form action="https://splitforms.com/api/submit" method="POST" style="display:grid;gap:8px;max-width:380px;">
02  <input type="hidden" name="access_key" value="YOUR_ACCESS_KEY" />
03  <input type="hidden" name="redirect" value="/thanks" />
04  <input name="name" placeholder="Name" required />
05  <input name="email" type="email" placeholder="Email" required />
06  <textarea name="message" placeholder="What's up?" required></textarea>
07  <input type="checkbox" name="botcheck" style="display:none" tabindex="-1" />
08  <button type="submit">Send</button>
09</form>

§ 04Field-by-field rundown1 fields · names you POST

What every field actually does.

Each field below ships in the newsletter signup template — rename, remove, or add your own. Splitforms accepts any name you POST.

emailREQUIRED

EMAIL

Your email

Reply-to address — splitforms wires this so hitting reply goes back to the sender.

placeholder · you@example.com

§ 05Newsletter Signup on other frameworks21 frameworks · same backend

One backend. Every framework.

The same newsletter signup template works on every framework splitforms supports. Pick yours.

§ 06Questions9 answered

Newsletter Signup on Carrd — FAQ.

Direct answers, no marketing fluff. Missing one? Email hello@splitforms.com.

01Does this newsletter signup work on Carrd?

Yes. The form is plain HTML with a single POST endpoint, so it runs on any Carrd site without server-side code, plugins, or SDKs. Drop the snippet into a Carrd page or component and submissions land in your splitforms dashboard.

02How much does the newsletter signup cost on Carrd?

Free for 500 submissions per month — no credit card, no trial. Pro is $5/mo for 5,000 submissions, and there's a one-time $59 3-year plan (15,000 submissions/mo for 36 months). The same pricing applies regardless of which framework hosts the form.

03Can I customize the fields?

Yes. The template ships with sensible defaults (your email…) — add, remove, or rename any of them. Splitforms accepts whatever fields you POST.

04How does spam protection work on the newsletter signup?

A hidden honeypot field catches dumb bots, and a tuned classifier scores the rest. You only see real submissions in your dashboard. No CAPTCHA, no friction for human users — and it works the same on Carrd as on any other framework.

05Can I send the newsletter signup submissions to Slack or Discord?

Yes. Webhooks are available on Starter and above, with auto-formatted payloads for Slack, Discord, and WhatsApp (via CallMeBot). Or send raw signed JSON to any URL — Zapier, n8n, your own server. Configure in the splitforms dashboard.

06Will it work on a static Carrd site?

Yes — the form posts directly to splitforms from the browser, so no server is involved. Works on Vercel, Netlify, GitHub Pages, Cloudflare Pages, S3, or any plain Apache host.

07Will my form trigger GDPR consent requirements?

If you have any EU or UK visitors, yes — GDPR requires explicit, freely-given consent for marketing emails. Add a separate consent checkbox (not pre-checked) below the email field. Same applies to CASL in Canada and PECR in the UK. US-only audiences fall under CAN-SPAM, which is less strict but still requires honest unsubscribe handling.

08How do I push to ConvertKit / Mailchimp / Substack / Beehiiv?

Webhook the submission as JSON. ConvertKit has a native webhook receiver per form; Mailchimp accepts via API or Zapier; Substack accepts via Beehiiv/Substack import API or Zapier; Beehiiv has direct webhook support. The newsletter platform fires the welcome sequence automatically on add.

09Does double opt-in hurt list growth?

Double opt-in drops list size by 20-30% but improves deliverability and engagement metrics — single-opt-in lists accumulate spam-trap addresses that tank inbox placement. Most serious senders run double opt-in for that reason. Substack and Beehiiv default to it.

§ 07Comparisonvs Web3Forms · vs Formspree

splitforms vs everything else.

Same drop-in API. More free submissions, Starter signed webhooks, MCP support no other backend has.

Feature	Web3Forms	Formspree	splitforms
Free monthly submissions	250	50	500
Custom fields beyond contact	Yes	Pro tier	Free
Webhooks (Slack / Discord)	Pro tier	Pro tier	Free, signed
AI / MCP submission inbox	No	No	Yes
Long-term plan (3-year flat)	—	—	$59 every 3 years

§ 08More templates for Carrd5 adjacent patterns

Ship a newsletter signup on Carrd in 60 seconds.

500 submissions per month, free forever. No credit card. Copy the snippet above and paste it into your Carrd project.

Get free access key →Read the docs

founders pricing locked in · early access open

Newsletter Signup for Carrd

Why Carrd developers choose splitforms for newsletter signup

Yes — this is the shortest safe path for Carrd.

Paste the HTML version, then replace YOUR_ACCESS_KEY.

Built for Carrd developers who hate operating a backend.

Drop into any Carrd project.

Generate, embed, receive.

Generate a free splitforms key

Paste the newsletter signup into your Carrd project

Receive submissions

The reason this newsletter signup exists.

Pick the form placement

Push to your ESP

Add GDPR / CASL consent

What changes when this newsletter signup lives in Carrd.

Pro Standard plan still required for Custom form Type

Embed element forms don't inherit Carrd's site styles

Carrd's success message + splitforms redirect can fight each other

The form widget's Field labels don't match input names by default

Pattern A — native Form widget set to Custom type

Pattern B — Embed element with full HTML control

What every field actually does.

Your email

One backend. Every framework.

Newsletter Signup on Carrd — FAQ.

splitforms vs everything else.

Other ready-to-ship Carrd forms.

Ship a newsletter signup on Carrd in 60 seconds.