Margin Bench / Our approach
Contact
Contact availability and what to include when reporting a calculation or content issue.
Public contact availability
For questions about Margin Bench, content corrections, or a reproducible calculation issue, write to tools [at] mailbun [dot] de.
This address is written in a simple text-obfuscated form to reduce automated mailbox scraping. There is no contact form or account system on this site, and no response-time or individual advisory service is promised.
What makes a useful issue report
When an address is available, include the page path, the question you were trying to answer, and the specific text or behavior that seems wrong. For calculation issues, provide a small invented example, the displayed result, and the result you expected with your arithmetic. Your browser and device type can help explain a display or input problem.
Do not include account passwords, access tokens, customer lists, payment details, or confidential financial records. Replace business numbers with a reproducible non-sensitive example where possible. Email is separate from the local calculator and is handled by the email services involved.
Scope of support
This contact channel concerns the website and its content. It is not an emergency channel or a route to personalized accounting, tax, legal, or investment advice. The methodology explains common input and rounding questions, and the privacy page describes the current data handling.