Terms of service
1. Who we are
Postio is a trading name of Onno Group Limited, registered in England & Wales (company no. 08622799). Registered office: Suite 22 Trym Lodge, 1 Henbury Road, Westbury-On-Trym, Bristol BS9 3HQ. In these terms, "we" means Onno Group Limited and "you" means the person or company using the service.
2. The agreement
These terms govern your use of the Postio API and dashboard at postio.co.uk. By creating an account or calling the API with a valid key, you agree to them.
3. The service
Postio provides UK address lookup, email validation, and phone validation APIs on a pay-per-request basis. Current per-request prices are published at postio.co.uk/#pricing and debited from a prepaid balance; we may change them with notice as set out in clause 11. Prices are inclusive of any applicable VAT; we will issue VAT receipts if and when we become VAT-registered.
4. Your account
You're responsible for keeping your API keys secret. Treat them like passwords. We log every request made with them — if a key is compromised, rotate it from the dashboard. You're liable for all usage under your keys until they're revoked.
5. Acceptable use
Don't use the API for fraud, spam targeting, stalking, harassment, or anything that breaks UK law. Don't use it to build a competing product that resells the underlying Royal Mail PAF data. Don't try to reverse-engineer the underlying data files. Don't use automated means to scrape or bulk-harvest responses beyond your purchased lookups. We can suspend or terminate accounts that breach this clause, without refund of prepaid balance.
6. Payment
Payments are processed by Stripe Payments Europe Limited. We never see or store full card numbers; we hold a Stripe customer id plus the card brand and last four digits. By topping up, you authorise Stripe to charge your stored card under these terms and its own terms of service. Top-ups are non-refundable while the account is open, but any remaining balance is refunded to the original payment card when you close the account.
7. Chargebacks and disputes
If you dispute a charge, please contact us via postio.co.uk/contact first — we'll usually resolve it within 2 working days. Raising a chargeback without contacting us, or raising a chargeback for a charge that was clearly authorised and consumed as API usage, is a breach of these terms and will result in account suspension and a block from future signups.
8. SLA and credits
99.99% monthly uptime on the API. If we miss it in any month, contact us via postio.co.uk/contact with the affected period and we will credit a pro-rata percentage of that month's spend back to your balance, cross-checked against the public status page. Credits are the exclusive remedy for downtime. The SLA excludes scheduled maintenance announced at least 24 hours in advance, force majeure, and failures caused by your own misuse.
9. Liability
To the fullest extent permitted by law, our total liability to you is capped at the greater of £100 or the amount you paid us in the prior 12 months. We're not liable for indirect, consequential or special losses, loss of profits, or loss of data. Nothing in these terms limits liability for death or personal injury caused by negligence, or for fraud. We're not liable for business decisions made based on API responses — the data is a best-effort snapshot of Royal Mail's files, not legal or financial advice.
10. Complaints
Send complaints via postio.co.uk/contact with "complaint" in the message. We acknowledge within 2 working days and aim to resolve within 10 working days. If you're not happy with the resolution, you can escalate in writing to the registered office.
11. Changes
We can update these terms with 30 days' notice to your registered email. Continued use after that counts as acceptance. If you disagree, close the account — your balance will be refunded.
12. Governing law
These terms are governed by English law. Any disputes go to the courts of England and Wales.
13. Contact
postio.co.uk/contact — chat or message us there. We aim to respond within 2 working days.