Reference
Limits
Plan caps, file sizes, and rate limits in one place.
Plan limits
| Plan | Submissions / month | File uploads | Max file size | Storage |
|---|---|---|---|---|
| Free | 500 | — | — | — |
| Pro | 10,000 | Yes | 25 MB | 5 GB |
| Business | 50,000 | Yes | 100 MB | 25 GB |
When you exceed the monthly submission cap, the endpoint returns HTTP 429 with a clear error and stops storing submissions until the next billing cycle. We won't quietly drop them — your visitors get an error response so you (or they) notice.
Rate limits
On a rolling 60-second window, per form endpoint:
- 5 submissions per IP, per form
- 30 submissions per IP across all forms
- 60 submissions per form, regardless of IP
Rate-limited requests return HTTP 429 with a Retry-After header.
Upload limits
- 10 files maximum per submission, regardless of plan.
- Per-file size cap is set by your plan (above).
- Total stored bytes (across form-builder images and submission attachments) count against your plan's storage allowance.
Submission payload
There's no hard cap on JSON / form-encoded payload size beyond what's reasonable for an email body. If you need to send large documents, use the file-upload flow rather than stuffing them into text fields.