Terms of Service

Last Updated: January 3, 2026

These Terms of Service (hereinafter referred to as "these Terms") set forth the terms and conditions for the use of CloudInbox (hereinafter referred to as "the Service"). All users of the Service (hereinafter referred to as "Users") shall use the Service in accordance with these Terms.

Article 1 (Definitions)

  1. "The Service" means the service provided by AB-Office that securely receives POP3 emails and aggregates them into a cloud-based mailbox.
  2. "User" means any individual or corporation that uses the Service.
  3. "Content" means emails, attachments, and other information sent and received through the Service.

Article 2 (User Registration)

  1. Those who wish to use the Service shall apply for user registration by the method prescribed by AB-Office after agreeing to these Terms.
  2. AB-Office may refuse to approve user registration if the applicant falls under any of the following:
    • When false information has been provided in the registration application
    • When the application is from a person who has previously violated these Terms
    • When AB-Office otherwise deems the registration inappropriate

Article 3 (Management of User ID and Password)

  1. Users shall manage their User ID and password for the Service at their own responsibility.
  2. Users may not, under any circumstances, transfer or lend their User ID and password to a third party, or share them with a third party.
  3. AB-Office shall deem any use of the Service made with a User ID and password combination that matches the registered information as use by the User who registered that User ID.

Article 4 (Usage Fees and Payment Methods)

  1. The Service provides both free and paid plans.
  2. The usage fees, payment methods, and payment timing for paid plans shall be separately determined by AB-Office and displayed on the Service.
  3. When using a paid plan, Users shall pay the usage fees by the method specified by AB-Office.
  4. Refunds of usage fees shall not be made in principle, except as otherwise determined by AB-Office.
  5. The Service is contracted on the web.

Article 5 (Prohibited Acts)

Users shall not engage in the following acts when using the Service:

  1. Acts that violate laws or public order and morals
  2. Acts related to criminal activities
  3. Acts that infringe on copyrights, trademark rights, or other intellectual property rights contained in the Service
  4. Acts that destroy or interfere with the functions of servers or networks of AB-Office, other Users, or other third parties
  5. Acts of commercially using information obtained through the Service
  6. Acts that may interfere with the operation of AB-Office's services
  7. Acts of unauthorized access or attempts thereof
  8. Acts of collecting or accumulating personal information of other Users
  9. Acts of using the Service for unlawful purposes
  10. Acts that cause disadvantage, damage, or discomfort to other Users of the Service or other third parties
  11. Other acts that AB-Office deems inappropriate

Article 6 (Suspension of Service Provision)

  1. AB-Office may suspend or discontinue all or part of the Service without prior notice to Users if it determines that any of the following circumstances apply:
    • When maintenance, inspection, or updates of the computer system related to the Service are performed
    • When the provision of the Service becomes difficult due to force majeure such as earthquakes, lightning, fires, power outages, or natural disasters
    • When computers or communication lines are stopped due to accidents
    • When AB-Office otherwise determines that the provision of the Service is difficult
  2. AB-Office shall not be liable for any disadvantage or damage incurred by Users or third parties due to the suspension or discontinuation of the Service.

Article 7 (Usage Restrictions and Account Deletion)

  1. AB-Office may, without prior notice, restrict all or part of the User's use of the Service or delete the User's registration if the User falls under any of the following:
    • When the User has violated any provision of these Terms
    • When it is found that false information has been registered
    • When there is a default in payment of fees
    • When there is no response to communications from AB-Office for a certain period
    • When the Service has not been used for a certain period since the last use
    • When AB-Office otherwise determines that the use of the Service is inappropriate
  2. If any of the circumstances in the preceding paragraph apply, the User shall immediately lose the benefit of time for all debts to AB-Office and must immediately pay all debts owed at that time in a lump sum.
  3. AB-Office shall not be liable for any damage incurred by Users due to actions taken by AB-Office based on this Article.

Article 8 (Withdrawal)

Users may withdraw from the Service by following the withdrawal procedure prescribed by AB-Office.

Article 9 (Disclaimer and Limitation of Liability)

  1. AB-Office does not guarantee, either explicitly or implicitly, that the Service is free from factual or legal defects (including defects, errors, bugs, or infringement of rights related to safety, reliability, accuracy, completeness, validity, fitness for a particular purpose, security, etc.).
  2. AB-Office shall not be liable for any damage incurred by Users due to the Service. However, this disclaimer shall not apply when the contract between AB-Office and the User regarding the Service (including these Terms) constitutes a consumer contract as defined in the Consumer Contract Act.
  3. Even in the case of the proviso in the preceding paragraph, AB-Office shall not be liable for any special damages (including cases where AB-Office or the User could have foreseen the occurrence of damage) incurred by Users due to breach of contract or tort caused by AB-Office's negligence (excluding gross negligence). In addition, compensation for damage incurred by Users due to breach of contract or tort caused by AB-Office's negligence (excluding gross negligence) shall be limited to the amount of usage fees received from the User in the month in which the damage occurred.
  4. AB-Office shall not be liable for any transactions, communications, or disputes that arise between Users and other Users or third parties regarding the Service.

Article 10 (Changes to Service Content)

AB-Office may change, add, or discontinue the content of the Service with prior notice to Users.

Article 11 (Changes to Terms of Service)

  1. AB-Office may change these Terms without the individual consent of Users in the following cases:
    • When the change to these Terms is in the general interest of Users
    • When the change to these Terms does not violate the purpose of the Service usage contract, and the change is reasonable in light of the necessity of the change, the appropriateness of the changed content, and other circumstances related to the change
  2. AB-Office shall notify Users in advance of the change to these Terms pursuant to the preceding paragraph, including the fact that these Terms will be changed, the content of the changed Terms, and the effective date.

Article 12 (Handling of Personal Information)

AB-Office shall handle personal information obtained through the use of the Service appropriately in accordance with AB-Office's "Privacy Policy."

Article 13 (Notices and Communications)

Notices and communications between Users and AB-Office shall be made by the method prescribed by AB-Office. AB-Office shall deem the currently registered contact information as valid and send notices or communications to that contact information unless the User submits a change notification in the manner separately prescribed by AB-Office, and these shall be deemed to have reached the User at the time of transmission.

Article 14 (Prohibition of Assignment of Rights and Obligations)

Users may not, without the prior written consent of AB-Office, assign their status under the usage contract or rights or obligations under these Terms to a third party, or use them as collateral.

Article 15 (Governing Law and Jurisdiction)

  1. Japanese law shall be the governing law for the interpretation of these Terms.
  2. In the event of a dispute regarding the Service, the court having jurisdiction over the location of AB-Office's head office shall be the exclusive agreed jurisdiction.

Article 16 (Handling of Emails)

  1. Users are responsible for appropriately managing emails received through the Service.
  2. AB-Office shall not be liable for the content of emails.
  3. Users guarantee that emails sent and received through the Service do not infringe on the intellectual property rights of third parties.
  4. Regarding the email sending function (SMTP) in this Service, it may not be available due to IP restrictions on the mail server. Users are recommended to add the allowed IP to their mail server or use other email clients to send emails. AB-Office shall not be liable for any damage caused by the unavailability of the email sending function.

Article 17 (Encryption and Security)

  1. AB-Office stores email bodies in encrypted form, but Users do not guarantee that the Service is completely secure.
  2. Users shall manage the authentication information (passwords, etc.) of their email accounts at their own responsibility.

Mobile App Supplementary Provisions (Addendum)

This mobile application is a client application for using the Service provided on the web.

Within this application, payment of usage fees, contract changes, or purchase of paid features will not be performed.

AB-Office