Terms of Service
Effective date: March 10, 2026 · Revasser Labs · New York, NY
These terms govern your use of the RevAddress API and website. By creating an account or making API requests, you agree to these terms. Plain language, no legalese.
1. The Service
RevAddress provides a managed REST API that proxies requests to the United States Postal Service (USPS) v3 Web Tools API. We handle OAuth 2.0 token management, rate limiting, and credential security so you don't have to.
The API is available at api.revaddress.com. The marketing site, documentation, and signup are at revaddress.com.
We are not USPS. We are a software company that builds developer tools for the USPS API. USPS service availability, delivery times, and postal operations are governed by USPS terms, not ours.
2. Accounts & API Keys
To use the API, you need an account (created at /signup) and an API key. Your responsibilities:
- Keep your API key confidential. Do not commit it to public repositories or embed it in client-side code.
- You are responsible for all activity under your API key, even if someone else obtained it.
- If your key is compromised, contact us immediately at [email protected] and we will revoke and reissue.
- One account per organization. If you need separate keys for staging and production, contact us.
3. Acceptable Use
You agree not to:
Abuse rate limits
Do not send requests faster than your plan allows. Implement exponential backoff on 429 responses. Automated retry floods will result in suspension.
Resell as a competing service
You may use RevAddress in your applications, but you may not wrap our API and sell it as your own USPS API product. Integrating into your shipping or e-commerce platform is fine.
Scrape or harvest
Do not use the API to bulk-scrape USPS data for datasets. The API is for operational use — validating addresses, tracking packages, generating labels for actual shipments.
Illegal use
Do not use the service for any purpose that violates applicable law, including mailing prohibited items or fraud.
4. Billing & Plans
Flat Monthly Pricing
All plans are billed monthly via Stripe. Prices are listed on our pricing page. There are no per-label, per-request, or per-transaction fees beyond the flat monthly rate.
- Subscriptions renew automatically on the billing anniversary
- You can cancel anytime — your access continues through the end of the paid period
- Plan upgrades take effect immediately, prorated for the remaining billing period
- Plan downgrades take effect at the next billing cycle
Sandbox (Free Tier)
The free sandbox tier provides limited API access for evaluation and development. Sandbox keys are rate-limited and may not be used in production. We reserve the right to revoke sandbox keys that show production-level traffic patterns.
Refunds
Since the service provides immediate access to USPS API capabilities, we do not offer automatic refunds. If you believe you were charged in error or are unsatisfied with the service, email [email protected] and we will work with you.
5. Bring Your Own Keys (BYOK)
Pro and Enterprise plans support BYOK — you can store your own USPS Developer Portal credentials in RevAddress and use your own USPS rate limits and USPS OAuth tokens.
- Your BYOK credentials are encrypted at rest (AES-GCM) and decrypted only in memory at request time
- You remain responsible for your USPS Developer Portal account and any USPS terms of service
- If USPS revokes your credentials, your API requests through RevAddress will fail with a clear error
- We cannot recover your USPS credentials if you lose them — you must obtain new ones from USPS
6. Service Availability
We target 99.9% uptime for the RevAddress API, measured monthly. This does not include:
- USPS API outages or degraded performance (we proxy to USPS, not replace them)
- Cloudflare infrastructure outages affecting edge regions
- Scheduled maintenance (we will notify via email with 24h notice)
Current API status is always available at api.revaddress.com/health.
7. Intellectual Property
The RevAddress API, documentation, and website are the intellectual property of Revasser Labs. You receive a license to use the API in accordance with your paid plan, not ownership.
Our open-source SDKs (Python, Node.js) are licensed under MIT and may be used freely under the terms of that license.
You retain all rights to your own data, code, and applications that integrate with RevAddress.
8. Limitation of Liability
RevAddress is provided "as is." To the maximum extent permitted by law, Revasser Labs is not liable for indirect, incidental, special, consequential, or punitive damages arising from your use of the service.
Our total liability for any claim related to the service is limited to the amount you paid us in the 12 months preceding the claim.
This means: if USPS delivers a package late, that is between you and USPS. If our API returns an error that causes you to miss a shipping cutoff, our liability is limited to your subscription fees. We encourage you to build retry logic and fallback handling into any production integration.
9. Termination
By you: Cancel anytime via Stripe billing portal or by emailing us. Your access continues through the end of the paid period. BYOK credentials are deleted upon cancellation.
By us: We may suspend or terminate your account for acceptable use violations, non-payment, or fraud. We will notify you via email before termination except in cases of obvious abuse (automated attacks, illegal use).
Effect of termination: Upon termination, your API key is deactivated, your BYOK credentials (if any) are deleted, and your account data is retained for 30 days (in case you change your mind), then purged per our privacy policy.
10. Changes to These Terms
We may update these terms. Material changes will be communicated via email at least 14 days before they take effect. If you disagree with the changes, cancel your subscription before the effective date. Continued use after the effective date constitutes acceptance of the updated terms.
11. Governing Law
These terms are governed by the laws of the State of New York, without regard to conflict of law principles. Any dispute arising from these terms will be resolved in the courts of New York County, New York.
12. Contact
For questions about these terms:
Last updated: March 10, 2026