Contact Costy

We welcome questions, correction requests, privacy inquiries, and product feedback.

Editorial corrections

If a Costy article contains a factual or calculation error, email [email protected] with the article URL and the detail that should be reviewed.

Privacy and account data

For privacy questions, email [email protected]. You can also review the privacy policy and account deletion instructions.

Product support and feedback

Signed-in users can submit product feedback from the Costy application. Include enough detail to reproduce a problem, but do not send passwords, payment details, or private authentication tokens.