11 KiB
API Research Report: Online Notary (RON) & Electronic Certified Mail for Debt Recovery Platform
Date: July 7, 2026
Context: Texas-based debt recovery web portal needs (1) Remote Online Notarization for Power of Attorney forms and (2) Electronic Certified Mail for legal service of documents.
1. REMOTE ONLINE NOTARIZATION (RON) APIs
1.1 Proof (formerly Notarize) — Strongest Candidate
URL: https://www.proof.com
What it is: The largest RON platform in the US (rebranded from Notarize). Now a full identity-centric security platform: notarize, sign, identify, verify, certify.
Pricing (as of July 2026):
| Plan | Notarize Cost | Best For |
|---|---|---|
| Pro (small biz) | $25/notarization with in-house notary; $10/additional seal; $10/on-demand witness; $5/additional signer | Low-volume (≤25 tx/mo) |
| Premium (mid-size) | Custom pricing, billed annually | API access, integrations, fraud monitoring |
| Enterprise | Contact sales | SSO, sandbox, dedicated CSM, custom SLAs |
Key Features for Debt Recovery:
- ✅ Notarize℠ Network — on-demand notaries available 24/7 (no need to hire your own)
- ✅ API & integration support (on Premium and up)
- ✅ Identity verification (NIST IAL2 compliant — $4/signer)
- ✅ Documents can be signed and notarized in same session
- ✅ All 50 states accepted including Texas RON-compliant
- ✅ eSignature included ($4/transaction)
- ✅ Custom co-branding available
- ✅ Sandbox access (Enterprise tier)
API Documentation Quality: ✅ Developer docs available at proof.com. REST API with webhooks. Integrations with Salesforce, eOriginal, Adobe eSign. API access requires Premium tier.
Texas Compliance: ✅ Texas HB 3496 (2017) authorized RON; SB 1624 (2021) updated requirements. Proof is compliant with all Texas RON requirements including:
- Two-way live audio-video
- Identity proofing (knowledge-based authentication + credential analysis)
- Electronic journal recording
- Tamper-evident digital certificates
Integration Feasibility: Good. REST API can be embedded in web portal. Document templates can pre-fill POA forms. User initiates notary session from within your portal.
Caveats: Pricing is per-transaction and adds up at volume. Premium plan required for API access. Sandbox only on Enterprise.
1.2 NotaryCam (Now part of PropLogos)
Pricing: Custom quote-based. Typically enterprise licensing. API: Available for high-volume partners. SOAP/REST. Texas Compliance: Meets all RON standards. Verdict: More real-estate focused. Less suitable for debt recovery use case.
1.3 Pavaso (Texas-Based)
URL: https://www.pavaso.com
Pricing: Custom, enterprise-focused.
Focus: Real estate eClosings (lenders, title companies, attorneys).
API: Platform-based with integrations for mortgage origination systems.
Texas Compliance: ✅ Based in Texas, built for Texas compliance.
Verdict: Overkill for simple POA notarization. Best for high-volume real estate closings, not debt recovery.
1.4 OneNotary
URL: https://www.onenotary.com
Pricing: Per-notarization (~$25-35), no subscription required.
API: Not widely advertised. Likely no public REST API.
Texas Compliance: ✅
Verdict: Consumer-facing, less suited for API integration.
1.5 RON Comparison Summary
| Provider | API Available | Per-Notary Cost | Sandbox | Texas Compliant | Best For |
|---|---|---|---|---|---|
| Proof | ✅ (Premium+) | $25 (in-house) / $10-25 (network) | ✅ (Enterprise) | ✅ | Best fit — full API + on-demand notaries |
| NotaryCam | ✅ (Custom) | Custom quote | Likely | ✅ | Real estate, high volume |
| Pavaso | ✅ (Custom) | Enterprise pricing | Likely | ✅ | Real estate eClosings only |
| OneNotary | ❌ Limited | ~$25-35/ea | ❌ | ✅ | Consumer-facing |
Recommendation: Proof (Pro or Premium) for the debt recovery portal. The API access, on-demand notary network, and identity verification make it the most suitable.
2. ELECTRONIC CERTIFIED MAIL APIs
2.1 LetterStream — Strongest Candidate
URL: https://www.letterstream.com
What it is: Online print-to-mail service. You upload documents, they print, fold, stuff, and mail via USPS.
Pricing (from website, July 2026):
| Service | Starting Price | Includes |
|---|---|---|
| First-Class Letter | $1.23 (as low as) | Double-window envelope, B&W printing, postage |
| Certified Mail | $8.34 (as low as) | Tracking, proof of delivery, no forms to fill |
| Postcards | Not listed publicly | Full color available |
| FedEx 2Day | Custom | Expedited delivery |
No monthly fees. No minimums. Free account.
API Capabilities (from https://www.letterstream.com/api/):
- REST API — "activated in less than a day by some partners"
- API calls available:
- Send one letter or batch of thousands
- Send letters, postcards, Certified Mail, and Flats
- Price check
- Retrieve PDF proofs
- Get mailing status
- Get tracing information for Certified Mail
- Retrieve Certified Mail signature
- Specify return envelopes
- Dictate paper color
API Documentation: ✅ Docs at docs.letterstream.com. To activate: create account, email support@letterstream.com requesting API access. REST-based, simple to integrate.
Proof of Delivery: ✅ Certified Mail includes:
- USPS tracking number
- Proof of mailing
- Signature upon delivery (retrievable via API)
- Electronic Return Receipt
Integration Feasibility: Very high. REST API can be called from any web backend. You can trigger certified mailings directly from your debt recovery portal when a notice needs to be sent. Batching for mass mailings. PDF proofs before sending.
2.2 CertifiedMail.com / CertifiedMail LLC
URL: https://www.certifiedmailllc.com
Status: Site appears inaccessible or no longer active as an API service.
Verdict: Avoid — service appears defunct or significantly changed.
2.3 USPS Electronic Return Receipt (Direct)
URL: https://www.usps.com/business/certified-mail.htm
What it is: USPS offers Certified Mail with Electronic Return Receipt directly.
Integration: No public REST API. Requires shipping software integration (e.g., Endicia, Stamps.com, Pitney Bowes).
Cost: ~$7.00-7.50 for Certified Mail + $2.10 for Electronic Return Receipt (postage rates vary).
Verdict: Requires additional middleware. More complexity to integrate directly.
2.4 E-Certify / SimplyCertified
SimplyCertified.com is now a parked/for-sale domain. No active service.
2.5 Certified Mail Comparison Summary
| Provider | API | Certified Mail Price per Piece | Proof of Delivery | Signature Retrieval | Monthly Fee |
|---|---|---|---|---|---|
| LetterStream | ✅ REST API | $8.34 (as low as) | ✅ USPS tracking | ✅ Via API | $0 |
| USPS Direct | ❌ (via 3rd party) | ~$7.00 + $2.10 eRR | ✅ | Via 3rd party | N/A |
| CertifiedMail.com | Unknown | Unknown | Unknown | Unknown | Unknown |
Recommendation: LetterStream — best balance of API quality, pricing, and features. No minimums. Easy API activation.
3. STRIPE CONNECT — Platform Payment Model
What it is: Stripe Connect enables marketplace/platform payment flows where you (the platform operator) collect payment from the debtor and disburse funds to the customer (debt recovery agency/attorney) minus your fee.
How it fits your model:
- Debtor pays the notary fee + certified mail fee through your portal
- Stripe Connect holds funds
- You take your platform fee (service fee)
- Remaining funds are paid out to the customer (the collection agency/law firm)
Pricing:
- Standard: 2.9% + $0.30 per transaction + 0.25% Connect fee (for platform)
- Custom: Volume-based pricing available
- Express: 2.9% + $0.30 + 0.50% Connect fee
- No monthly fee for Connect
Key Features:
- ✅ Onboarding API — onboard customers (collection agencies/law firms) to receive payouts
- ✅ Destination charges — collect payment from debtor, take your cut, send remainder
- ✅ Separate charges and transfers — full control over fund movement
- ✅ Dispute handling — Stripe handles chargebacks
- ✅ ACH and card support
Verdict: ✅ Stripe Connect is well-suited for this model. Standard integration with destination charges is the recommended approach.
4. TEXAS COMPLIANCE OVERVIEW
Remote Online Notarization
- Texas authorizes RON under Government Code Chapter 406 (HB 3496, effective 2018)
- Requirements for the platform:
- Two-way live audio-video communication
- Identity proofing (credential analysis + knowledge-based authentication)
- Audio-visual recording of notarization
- Electronic notary journal
- Tamper-evident certificate
- Proof (and other major RON providers) is compliant
- The notary must be commissioned in Texas; the signer can be anywhere
Certified Mail for Legal Service
- Texas Rules of Civil Procedure allow service by certified mail, return receipt requested
- Texas Business & Commerce Code allows electronic return receipts
- LetterStream provides physical USPS Certified Mail with tracking and signature — meets legal standards
5. RECOMMENDED ARCHITECTURE
Debt Recovery Web Portal
├── Proof API (RON) ─────── Notarize Power of Attorney forms
│ └── On-demand notaries via Proof's Notarize Network
│ └── Identity verification (NIST IAL2)
│
├── LetterStream API ────── Send Certified Mail to debtors
│ └── Print, mail, track, retrieve signatures
│
└── Stripe Connect ──────── Payment collection & disbursement
└── Debtor pays notary fee + mailing fee
└── Platform takes service fee
└── Customer receives net payout
Estimated Per-Transaction Costs
| Line Item | Cost |
|---|---|
| RON Notarization (Proof Network) | ~$25-$35/notarization |
| Identity Verification (Proof) | ~$4/signer |
| Certified Mail (LetterStream) | ~$8.34/letter |
| Stripe Connect fees | ~3.15% + $0.30 |
| Total per debtor | ~$37-$48 + processing fees |
Next Steps
- Contact Proof sales for Premium plan pricing and API key
- Create LetterStream free account → email support for API access
- Set up Stripe Connect account and configure destination charges
- Build integration layer: portal → Proof API/LetterStream API/Stripe Connect
- Test end-to-end in sandbox before launching