Move beyond contact-form forwarding with uploads on Free, a signed webhook, transparent plan limits, longer operational history, and routes into thousands of app workflows. Form Plume gives a growing form fewer future migrations.
Side by side
SendForm is a new, focused serverless form backend rather than a visual form builder. Its current public pages document contact forms, automatic spam scoring, email, Slack, custom webhooks, a dashboard, CSV export, and API access. Exact pricing, numeric limits, webhook signing, retention, and stricter Pro spam controls are not publicly documented, so this comparison labels those gaps instead of guessing.
| Decision point | Form Plume | SendForm |
|---|---|---|
| Free submission allowance | 500 / month A published numeric limit across unlimited forms | Described only as ‘thousands’ No exact monthly allowance is published on the public site |
| File uploads | Included on Free 100 MB of managed storage; Pro expands to 10 GB | Coming soon Attachments, applications, and support intake are not launched yet |
| Webhook security | Signed webhook on Free Receivers can verify that each payload came from Form Plume | Custom webhook available A cryptographic signature is not documented publicly |
| Submission history | 60 days on Free A clear retention window with dashboard search and export | Public description is inconsistent The homepage says submissions are stored; a 2026 guide says no retention by default |
| Destinations and integrations | Native routes plus broad app automation Zapier, Make, MindCloud, and signed webhooks connect forms to thousands of workflows | Email, Slack, webhook, CSV, and API No wider native integration catalog is documented |
| Spam protection | Layered controls with recoverable quarantine Adaptive scoring, CAPTCHA options, honeypots, rate limits, origins, blocklists, and email hygiene | Automatic scoring without CAPTCHA Bot detection and cooldown are included; stricter Pro controls are not specified |
| Exports and API access | Dashboard, exports, API, and MCP Review submissions or connect them to developer and AI workflows | CSV export and API access API authentication, endpoints, and plan availability are not documented publicly |
| Plan transparency | $0 Free and $12 / month Pro Submission, storage, retention, and feature limits are published | Free and Pro are referenced Exact prices and plan limits are not available on a public pricing page |
Where Form Plume pulls ahead
SendForm keeps simple contact forms light. Form Plume pulls ahead when submissions include files, trigger sensitive automation, or need clear plan boundaries and a larger integration surface.
SendForm explicitly labels attachments, job applications, and support intake as coming soon. Form Plume includes managed file storage on Free, so a candidate résumé, customer screenshot, or project brief can enter the workflow now.
SendForm advertises forwarding to any custom endpoint but does not publicly document webhook signatures. Form Plume signs webhook events on Free, giving your receiver a cryptographic check before it updates a CRM, starts a job, or trusts personal data.
SendForm says its free plan stores thousands of submissions and refers to optional Pro controls without publishing exact allowances or prices. Form Plume states the capacity, retention, storage, and automation included in each plan, reducing uncertainty before a campaign launches.
Choose by situation
Simple contact form with automatic filtering
It depends
Both accept a normal HTML POST. SendForm is appealing when CAPTCHA-free filtering and direct email are the whole job; Form Plume leaves more paths open as the workflow grows.
Application or support form with attachments
Form Plume
Managed uploads are already included, while SendForm currently lists attachments and related form types as coming soon.
Webhook that changes production data
Form Plume
The receiving service can verify Form Plume's signature before trusting or processing the submission event.
EU-first procurement requirement
SendForm
RapidFoundry is established in Cyprus, says data is primarily processed in the EU/EEA, and offers a DPA to business and enterprise customers on request.
FAQ
Choose Form Plume when your form needs capabilities beyond a lightweight contact endpoint. File uploads, a signed webhook, explicit retention, transparent plan limits, and wider integration routing are available now instead of being undocumented or marked as coming soon.
SendForm's public FAQ says the free plan stores thousands of submissions but does not state an exact monthly or lifetime number. Form Plume publishes a 500-submission monthly Free allowance, so you can measure expected traffic against a defined boundary.
Not as a launched capability on the page reviewed. SendForm labels file attachments, job applications, and support intake as coming soon. Form Plume Free includes managed storage for forms that need documents, screenshots, images, or other attachments today.
SendForm advertises custom webhook forwarding and replay, but its public product pages do not document a cryptographic signature or verification procedure. Form Plume includes a signed webhook on Free so your endpoint can authenticate the sender before using the payload.
Usually. Both products accept standard form submissions. Create a Form Plume endpoint, replace the SendForm action URL, remove provider-specific hidden fields, and test redirects, validation, spam handling, email delivery, and automation before changing the production form.
SendForm has a useful low-friction approach: automatic scoring, bot detection, and submission cooldown without requiring CAPTCHA. Form Plume is stronger when you need controls you can tune or audit, including multiple CAPTCHA providers, adaptive filtering, origin rules, manual blocklists, rate limits, email hygiene, and recoverable quarantine.
Its public descriptions conflict. The homepage says each submission is stored in a searchable dashboard and offers 30-day analytics, while an April 2026 SendForm article says submissions are not retained by default. Confirm the current behavior in your account before relying on either model. Form Plume publishes a 60-day Free retention period.
SendForm has a credible EU-first posture: RapidFoundry is based in Cyprus, says personal data is primarily stored and processed within the EU or EEA, and makes a DPA available to business and enterprise customers on request. Privacy needs depend on your data, retention configuration, subprocessors, and legal obligations, so review both providers before sending sensitive information.
Yes. Like SendForm, Form Plume accepts ordinary HTML form posts and JavaScript requests. You can submit from React, Next.js, Vue, Astro, a static-site generator, or plain HTML while keeping your existing fields and frontend design.
The Form Plume alternatives hub compares hosted form backends using consistent criteria such as real submission limits, uploads, retention, webhook security, spam controls, integrations, and the point where a production form must upgrade.
One line. Zero backend.
