Contact
Last updated: April 2026
We read every message. Response time is usually within a few business days.
- General: [email protected]
- Corrections / editorial: [email protected]
- Privacy & data requests: [email protected]
- Partnerships & press: [email protected]
Operating location
DueDateLab is operated from Belgium.
For postal correspondence, please email [email protected] first and we will share a forwarding address.
Report a calculation issue
Found a bug or think a number looks off? Email [email protected] with the page URL, the inputs you used, and what you expected. We'll investigate and reply.