Last updated: July 6, 2026
Privacy Policy
Hangzhou Duling Technology Co., Ltd. ("we", "us", or "Postfax.io") respects your privacy. This policy explains how we collect, use, and protect your information when you use our online fax services.
1. Information We Collect
Account information: name, email address, company name, and billing details when you register or subscribe.
Usage data: fax numbers sent/received, transmission logs, delivery status, IP address, browser type, and device information.
Payment data: processed by third-party payment providers. We do not store full credit card numbers on our servers.
Documents: fax content is processed solely to complete transmission and is retained only as long as necessary for delivery, compliance, and your account history.
2. How We Use Your Information
To provide, maintain, and improve Postfax.io services.
To process payments, send service notifications, and respond to support requests.
To detect fraud, abuse, and security incidents.
To comply with applicable laws and legal obligations.
3. Data Sharing
We do not sell your personal information. We may share data with trusted service providers (hosting, payment, email delivery) under strict confidentiality agreements, and with authorities when required by law.
4. Data Security & Retention
We use encryption in transit (TLS) and industry-standard safeguards to protect your data. Fax transmission logs are retained according to your plan and legal requirements. You may request deletion of your account data by contacting [email protected].
5. Your Rights
Depending on your jurisdiction, you may have the right to access, correct, delete, or export your personal data. Contact us at [email protected] to exercise these rights.