Pay per envelope. Scale as you ship. No per-user fees. Free sandbox to get started.
One API call to create and send a signature request = 1 envelope, regardless of pages or signers.
Your API keeps working. Overages are billed at your plan’s per-envelope rate at the end of the billing cycle. No throttling.
Yes — the Sandbox plan is free with $1.00/envelope overage. No subscription needed, just pay for what you use beyond 50/mo.
Pass collect_payment: true when creating an envelope. After the signer signs, they’re prompted to pay. Connects to Stripe, Square, or Authorize.net.
Transparent pricing. No per-user fees. Payment collection built in.
Production-tier comparison at ~500 envelopes/month
Intermediate plan — 100 envelopes/mo, per-envelope overage fees
Enterprise agreement required for API access — custom pricing only
Developer plan: 40 docs/mo at $40/mo. Enterprise plan for full API features.
| Feature | Sign-n-Pay API | DocuSign API | Adobe Sign API | PandaDoc API |
|---|---|---|---|---|
| Starting price | $0/mo (50 free) | $50/mo (40 env) | Enterprise only | $40/mo (40 docs) |
| 500 env/mo cost | $149/mo flat | ~$1,900/mo | Custom quote | ~$1,880/mo |
| Payment collection | ✓ Built-in | Business Pro+ only | Not included | Enterprise only |
| Embedded signing | ✓ All plans | ✓ | ✓ | Enterprise only |
| White-label | ✓ Pro plan ($49) | Advanced ($480/mo) | Enterprise OEM | Enterprise only |
| Webhooks | ✓ All plans | All plans (basic); Connect: Advanced+ | ✓ Enterprise | Limited on Dev; Full on Enterprise |
| Bulk send | ✓ Pro plan ($49) | Advanced ($480/mo) | Enterprise only | Enterprise only |
| Free sandbox | ✓ 50 env/mo (production) | Dev sandbox only (not prod) | Dev sandbox (14-day) | 14-day trial |
| Per-user fees | None | None (envelope-based) | Per-user on Teams | None on API plan |
| Overage pricing | $0.30–$1.00/env | ~$0.50–$4.80/env | Contact sales | $4.00/doc |