Last updated July 25, 2026

Terms of Service

These terms are an agreement between you and OneCommerce Inc., a New York corporation ("OneCommerce", "we", "us"), the operator of Sailwyn (the "Service"). By using the Service, you agree to these terms.

The Service

Sailwyn provides Amazon advertising reporting, seller-authorized Brand Analytics, sales and traffic reporting, inventory and profitability analysis, AI-assisted analysis and recommendations, review-request tools, and campaign optimization for Amazon sellers. Brand Analytics features are available only for reports and data made available to the seller's authorized account. Where enabled by the seller, the Service may optimize advertising within the seller's own Amazon Ads account — updating budgets and bids, adjusting placement bids, creating exact-match keywords from harvested search terms, and creating negative keywords and negative product targets — and may send Amazon's standard review requests for eligible orders, in each case only with the seller's approval in the Action Center and according to seller-configured controls; all such actions are logged. The Service does not create campaigns or ad groups, add positive product or category targets, or create, update, or delete listings, orders, or any other seller account data. Product features may change as we improve the Service or respond to Amazon platform requirements.

Eligibility and accounts

The Service is intended for business use by Amazon sellers and their authorized staff. You agree to provide accurate account information, keep your login credentials secure, and notify us promptly of any unauthorized use of your account.

Amazon authorization

Connecting Amazon data requires authorization through Amazon's official OAuth flows. You may only connect Amazon accounts that you own or are authorized to manage. You may revoke the Service's access at any time through your Amazon account settings or by contacting support. Revocation stops future data synchronization; deletion of stored data is handled as described on our Data Deletion page.

Acceptable use

You agree to use the Service only for lawful business purposes. You may not attempt to access data belonging to another customer, interfere with the operation or security of the Service, resell access to the Service without our agreement, or use the Service in violation of Amazon's policies or applicable law.

Customer data

Data you connect or upload to the Service remains yours. You grant us the rights needed to process that data solely to provide the Service to you, as described in our Privacy Policy.

Fees

Our plans and their prices are published on our Pricing page. Plans are billed monthly in US dollars. We charge no setup fees, no onboarding fees, and no percentage of your advertising spend, and there are no hidden charges. New accounts start with a one-month free trial that does not require a credit card, and you may cancel at any time. We will not charge you without your agreement to a plan and its published price, and we will give you notice before any price change takes effect.

Intellectual property

The Service, including its software, design, and documentation, is owned by OneCommerce Inc. These terms do not grant you any rights to our trademarks or other intellectual property except as needed to use the Service.

AI-generated analysis and recommendations

Parts of the Service use machine learning and large language models to analyze your connected Amazon data and generate diagnosis, findings, and recommended actions. This processing runs within our own Amazon Web Services environment; we do not send your Amazon data to third-party generative AI providers and do not use it to train, fine-tune, or improve general-purpose or shared models. AI-generated output is advisory and may be incomplete or incorrect. It is not professional, legal, tax, or financial advice. No AI-generated change is applied to your Amazon account without your explicit approval in the Action Center, and you are responsible for reviewing each recommendation before approving it.

No guarantee of marketplace outcomes

The Service provides data and tools. We do not guarantee sales, ranking, advertising performance, profitability, or any Amazon approval or marketplace outcome. You are responsible for reviewing recommendations, including AI-generated recommendations, before acting on them.

Disclaimer and limitation of liability

The Service is provided "as is" and "as available". To the maximum extent permitted by law, we are not liable for indirect, incidental, special, or consequential damages arising from use of the Service, and our total liability for any claim is limited to the amounts you paid for the Service in the twelve months before the claim arose.

Termination

You may stop using the Service and close your account at any time. We may suspend or terminate access for violation of these terms, for security reasons, or if required by Amazon platform policies, with notice where reasonably possible.

Changes to these terms

If we make material changes to these terms, we will update this page and revise the date above. Continued use of the Service after changes take effect constitutes acceptance of the updated terms.

Contact

For questions about these terms, contact OneCommerce Inc. at chris.c@sailwyn.com, or by mail at OneCommerce Inc., 540 W 28th St, Apt 3J, New York, NY 10001, United States.