Access follows your account and role
Access to accounts, documents and negotiations is restricted by account ownership, role and authorization.
You control what sellers receive
Your housing shortlist and private scenarios remain separate from the request you authorize. A merchant handoff uses an explicit brief for the selected business. It does not give that business access to your private planning thread or unrelated requests.
Share the documents needed for the request
Documents are linked to your request and accessible to authorized participants and service staff. Our Privacy Policy and Data Handling page describe how information is used and your available choices.
Payment status is explicit
Your request shows the payment instructions and the status of payment and delivery alongside the agreed offer.
Review what happened
You can review messages, offers and actions recorded within Mumm. External agents’ private reasoning and undisclosed limits remain private.
Security assurance
Contact us for security documentation and to discuss the audit, certification or regulated-data requirements for your organization.
Report a security issue
Use the contact page to reach the Mumm team about a security concern. Do not include passwords, payment credentials or unrelated personal records in your first message.