Support

Contact us#

Email [email protected]. We reply within two business days, Monday to Friday, Japan time (JST, UTC+9), excluding Japanese public holidays. Support is available in English and Japanese.

お問い合わせは [email protected] までメールでお願いします。月曜〜金曜（日本時間、日本の祝日を除く）、2営業日以内に返信します。日本語・英語のどちらでも承ります。

It helps to include the email address you sign in with, what you were doing, and what happened instead. If it is about one booking, the booking's date and the customer's name are enough to find it — please do not send card details or passwords.

Help guides#

Find step-by-step help with setup, bookings and common problems.

Connected apps#

Follow these guides to connect your accounts: Google Calendar, Outlook or Microsoft 365, Zoom and Stripe. Each guide explains how to connect the service, use it with Business Box and disconnect it.

If you are using the Business Box API, the developer documentation includes the reference. You can also contact us at the email address above.

Billing and your account#

Plans, invoices and cancellation are on the Billing page inside Business Box. You can close your account yourself under Settings, which deletes your data — see the privacy policy for exactly what that covers. Contact support if you need help closing your account or requesting a copy of your data.

Reporting a security problem#

Write to [email protected] with “security” in the subject and we will prioritise it. Please include enough detail for us to investigate and reproduce the issue.

Who we are#

Business Box is made by App Dev Plus 合同会社, 2F Inose Building, 2-7-20 Kita-Aoyama, Minato-ku, Tokyo 107-0061. The legal notice has the statutory details, and the terms and privacy policy set out the agreement.

Last reviewed 16 October 2026.