Effective date: August 8, 2026
Updated: September 6, 2026
1. Agreement to These Terms
By using this Service, you are deemed to have agreed to these Terms of Service and the Privacy Policy. If you do not agree, please do not use this Service.
2. Nature of the Service (Receive Only)
This Service issues receive-only USOM Mail addresses and receives, stores and displays messages delivered to them. It does not provide general-purpose sending, replies or relaying.
Delivery depends on external services, networks, spam filtering and other factors. USOM does not guarantee delivery, completeness, continuity, availability or fitness for a particular purpose. The Service is provided as is.
3. User Responsibility
Users are responsible for their use and must not rely solely on this Service for important email or backups. Users must have authority to use issued addresses and check the terms and identity-verification requirements of services where they register.
Users must not use the Service for infringement of third-party rights, fraud, phishing, spam, malware, impersonation, harassment, unauthorized access or other unlawful or improper purposes.
4. Rules for Use of Mail and Content
Users warrant that they hold lawful rights of use for any email or other data sent or received through this Service. The following acts are prohibited:
- Sending spam, indiscriminate advertising, chain mail, or other bulk mailings
- Phishing, fraud, impersonation, intimidation, harassment, or stalking
- Sending or receiving malware, viruses, or malicious scripts
- Use that infringes third parties' personal information, copyrighted works, confidential information, or other rights
- Circumventing restrictions on this Service, scraping, excessive automation, or improper use of resources
- Any other act that causes harm to the operator or third parties, or that violates law or public order and morals
The operator may review stored email and other data to the minimum extent necessary for operating the Service, preventing improper use, responding to incidents, or complying with law.
5. Retention and Deletion
Retention depends on the plan or address type. The free plan currently retains mail for 30 days. The conditions displayed in the Service or on the pricing page take precedence.
Deleted or expired mail generally cannot be recovered. Requesting account deletion suspends use; signing in with the same account within 30 days cancels the request. After that period, scheduled processing deletes the account and received mail. Issued address strings are retained without an owner to prevent reissuance.
6. Shared Viewing and AI Agent Integration
Shared viewing allows people invited by the user to read the inbox. Users must manage invite recipients, links and codes appropriately.
Authorized Agents and MCP connections can retrieve permitted addresses and messages. Users are responsible for Agent tokens and should revoke them when no longer needed. Agent features do not provide sending or replies.
7. Suspension and Deletion
The operator may suspend, modify, or terminate all or part of this Service without prior notice for reasons including maintenance, incidents, security measures, legal compliance, or the discontinuation of external services. Where improper use is found or suspected, the operator may suspend or delete the relevant account, email address, email, or other data.
8. Disclosure of Information
The operator may, in accordance with applicable law, disclose or provide user information, logs, email, or other data upon a request from police, courts, administrative agencies, telecommunications carriers, or other bodies with legitimate authority, or where necessary to respond to unlawful acts, rights infringements, attacks on the Service, or other issues.
9. Disclaimer
The operator is not liable for damages arising from non-delivery, delay, duplication, misdelivery, loss, or corruption of email; deletion following expiration of the retention period; suspension of an account or address; interruption of the Service; failures of third-party services; a user's device or communication environment; unauthorized access; or other causes not attributable to the operator.
Even where the operator is guilty of slight negligence, the operator's liability shall, to the extent permitted by law, be limited to ordinary and direct damages actually incurred by the user, and the operator shall not be liable for lost profits, loss of data or opportunity, or indirect or special damages. This section does not exempt the operator from liability for its own willful misconduct or gross negligence, for damage to life or body, or for any other liability that cannot be exempted or limited by law.
10. External Services
This Service uses third-party services for authentication, hosting, databases, email delivery, and other purposes. The operator makes no warranty regarding changes to the specifications, suspension, failure, or changes in terms of any third-party service.
11. Changes to These Terms
The operator may amend these Terms as necessary. Amended Terms take effect from the time they are posted on this Service.
12. Governing Law and Jurisdiction
These Terms are governed by the laws of Japan.
For any dispute arising between a user and the operator in connection with the use of this Service or these Terms, the Tokyo District Court, as designated by the operator, shall have exclusive agreed jurisdiction as the court of first instance.
The Japanese-language version of these Terms is the authoritative text, and versions translated into languages other than Japanese are provided for reference only. If there is any discrepancy between the Japanese version and a translated version, the Japanese version shall prevail. The provisions of this section regarding governing law and jurisdiction apply equally to every language version made available.
13. Contact
For inquiries about these Terms, contact:
Operator: USOM Mail Development Team
Email: boq4thqk82@kwonwe.com