Contact
Send focused DeadlineDays feedback to the public operations email.
Written and maintained by DeadlineDaysReviewed on July 17, 2026
What to send
Use the public contact email for bug reports, country-specific public holiday rule corrections, calculation result issues, and focused feature improvement suggestions.
Details that help review
Include the page URL, country, date range, selected non-working days, holiday coverage, expected result, actual result, and an official source when you are reporting a public holiday or country rule issue.
Do not send sensitive data
Do not send sensitive personal information, payroll data, tax records, customer information, contract details, or confidential business information.
Operating location and response timing
DeadlineDays is an independent site built and maintained by one developer, working from South Korea. The developer is not a lawyer, employment specialist, accountant, or tax adviser. Because of that, the site publishes its calculation rules, holiday data sources, per-country verification dates, and known limits. Corrections: [email protected]
Messages are reviewed on KST business days as maintenance time permits; concise reports with reproducible inputs and an official source can be assessed more efficiently, while complex holiday-source checks may take longer.
Use the operations email
The public contact email is intended for concise site feedback, calculation issues, holiday rule corrections, and feature requests.
Country rule improvements
For country-specific corrections, include the official source or policy reference so the calculator wording, defaults, and holiday coverage notes can be reviewed accurately.
What to include in a report
When emailing the operations address, include the page URL, country, date range, selected non-working days, holiday coverage, expected result, actual result, browser or device, and an official source if you are reporting holiday data.
Information to keep out of email
Do not send sensitive personal information, payroll data, tax records, customer details, contract terms, or confidential business information.