Run unlimited forms with 500 free submissions, keep responses for 60 days, and start with uploads and a signed webhook before paying. Form Plume gives static-site forms more operational room from their first launch.
Side by side
Both products turn an ordinary HTML form into email notifications, dashboard records, and automated delivery. The meaningful differences are when useful features become available, how long records remain accessible, and how much traffic each plan can absorb.
| Decision point | Form Plume | SimpleForm |
|---|---|---|
| Free capacity | 500 submissions · Unlimited forms 60 days of dashboard history is included. | 100 submissions · 3 forms The Free plan retains submissions for 7 days. |
| First paid plan | $12 / month · 10,000 submissions Unlimited forms, 10 GB of storage, and 2 years retention. | $9 / month · 5,000 submissions Pro includes unlimited forms, 90-day storage, and 5 MB files. |
| HTML, AJAX, and API access | HTML posts, fetch, SDKs, and a managed API Use a form action for a quick start, then add API access on Pro as the product grows. | HTML, AJAX, JSON, and documented account APIs Its docs publish endpoints for forms, submissions, webhooks, and exports. |
| File uploads | 100 MB included on Free 10 GB on Pro, with uploads stored alongside each submission. | Uploads begin on Pro The per-file limit is 5 MB on Pro and 25 MB on Agency. |
| Webhooks | 1 signed webhook on Free Unlimited signed destinations on Pro, with delivery controls for production workflows. | Signed webhooks on paid plans Pro+ supports multiple URLs and optional HMAC-SHA256 signatures. |
| Integrations and routing | Native destinations plus broad automation routes Connect through Slack, Discord, Sheets, email tools, Zapier, Make, MindCloud, or any signed webhook. | Seven named services plus custom webhooks The official site lists Slack, Discord, Zapier, Make, Airtable, Google Sheets, and Notion. |
| Spam and origin protection | Layered filtering with recoverable quarantine Four CAPTCHA options, domain controls, rate limits, blocklists, email hygiene, and adaptive scoring. | Honeypot, rate limits, and reCAPTCHA v3 Domain restriction and optional reCAPTCHA are paid features; rate limiting is 10 requests per IP per endpoint per hour. |
| Email and client-facing controls | Autoresponders on Pro; custom sending on Team Team workspaces pair shared ownership with custom sender and SMTP options. | Autoresponders on Pro; white-label on Agency Agency adds a custom email domain, unlimited recipients, branding removal, and priority support. |
Where Form Plume pulls ahead
SimpleForm keeps its product approachable and prices Pro competitively. Form Plume moves more of the durable form workflow into Free and supplies a larger step up when a launch becomes a steady source of leads or requests.
SimpleForm Free supports three forms and keeps responses for seven days. Form Plume allows unlimited forms and retains them for 60 days, so several landing pages, a portfolio, and a newsletter can share one account without immediately creating an archive process.
SimpleForm reserves file uploads and webhooks for Pro. Form Plume includes 100 MB of upload storage and one signed webhook on Free, letting a real application or intake flow be tested end to end before its first bill.
SimpleForm Pro costs less at $9 monthly and includes 5,000 submissions. Form Plume Pro costs $12 and doubles that allowance to 10,000 while extending retention from 90 days to two years, a stronger trade for busy forms and seasonal spikes.
Choose by situation
Several static sites on one free account
Form Plume
Unlimited forms, five times the monthly submissions, and much longer retention remove the need to ration endpoints across projects.
Developer who prioritizes a documented account API
SimpleForm
Its public docs explicitly list authenticated forms, submissions, webhooks, and export endpoints, making the available surface easy to evaluate before signup.
Application or intake form with attachments
Form Plume
Free upload storage, retained files, longer history, and a signed webhook support a complete workflow without a paid prerequisite.
Low-volume paid form needing white-label delivery
It depends
SimpleForm Agency publishes white-label and custom-domain options; Form Plume Team combines custom sending with shared ownership and a larger operational workspace.
FAQ
Choose Form Plume when a static form needs more capacity and operational depth before an upgrade. Free includes 500 monthly submissions across unlimited forms, 60-day history, file storage, and one signed webhook, while SimpleForm Free publishes 100 submissions, three forms, seven-day storage, no uploads, and no webhooks.
At the first paid tier, yes: SimpleForm Pro is $9 per month and Form Plume Pro is $12. Form Plume includes twice the monthly capacity, 10 GB of file storage, and two-year retention, so the better value depends on whether the lowest bill or the larger operating allowance matters most.
Usually. Both services accept standard HTML POST requests through a hosted endpoint. Create a Form Plume form, replace the action URL, preserve your named fields, and test the redirect, email notification, attachments, and webhook before disabling the old endpoint.
Yes. A hosted form endpoint works anywhere the browser can submit HTML, including Astro, Next.js, Eleventy, Hugo, Gatsby, Jekyll, and plain static pages. Form Plume also has framework-specific guides when you want fetch-based handling and custom interface states.
Form Plume includes 100 MB of file storage on Free. SimpleForm documents uploads as a Pro feature with a 5 MB per-file limit, increasing to 25 MB per file on Agency. For application forms and client intake, Form Plume lets you validate the complete attachment workflow before subscribing.
Yes. SimpleForm documents an optional HMAC-SHA256 signature on Pro+ webhook deliveries. Form Plume also signs webhook events, includes one signed destination on Free, and provides unlimited signed destinations on Pro for workflows that fan out beyond a single receiver.
SimpleForm combines honeypot fields, an IP limit of 10 submissions per endpoint per hour, optional reCAPTCHA v3, and paid domain restriction. Form Plume offers layered spam protection with several CAPTCHA providers, origin controls, rate limits, blocklists, email hygiene, adaptive filtering, and a quarantine where false positives can be recovered.
SimpleForm names Slack, Discord, Zapier, Make, Airtable, Google Sheets, and Notion, with custom webhooks for other destinations. Form Plume combines native routes with Zapier, Make, MindCloud, and arbitrary signed webhooks, making it the stronger option when a form must reach many different business systems.
SimpleForm is a reasonable choice when 5,000 paid submissions are enough, saving $3 per month is important, or its explicitly documented account API matches an existing integration plan. Its Agency tier is also clear about white-label delivery, a custom email domain, and unlimited recipients.
Start with the alternatives hub to compare other hosted form backends under the same criteria: submission allowances, retention, uploads, webhook security, spam controls, and automation reach. Then use the Form Plume quickstart to test your actual HTML form against a fresh endpoint.
One line. Zero backend.
