LINE and SMS reminders
In Japan, LINE is where messages get read. Email is where they go to be ignored. Business Box uses email.
No. Confirmations, reminders, cancellations and everything else go by email. There is no LINE integration and no SMS.
Why this matters more here than elsewhere#
LINE is close to universal in Japan and is where a great many people actually read messages. A reminder in an email inbox somebody checks twice a week is not doing the same job as a LINE message.
It shows up in two places: reminders that get missed, and older or less email-fluent customers who genuinely do not have a working address they check.
What email still does#
It is not useless, and for some audiences it is better. Email carries the calendar attachment that puts the appointment in the customer's own calendar, which is the thing that actually prevents the no-show. It carries the link to reschedule or cancel. And business customers largely live in email anyway.
Delivery failures are also visible: a booking whose confirmation was refused is flagged and you are told, so you know to reach the person another way. When email does not arrive
Lean on the calendar invitation#
When a booking is written to your Google or Outlook calendar, the customer is added as a guest and the provider sends its own invitation. The appointment then sits in their phone's calendar with its own alert, which for many people is more effective than any reminder message.
Send the LINE message yourself where it counts#
For the customers who need it, a message the day before takes ten seconds and you have the booking in front of you. Most hosts who care about this do it for a handful of people rather than everybody.
Use LINE for the booking, not the reminder#
Nothing stops you putting your booking link in a LINE rich menu, an automated LINE greeting or a broadcast. The booking flow itself opens perfectly well in LINE's in-app browser. The limitation is only about outbound messages from Business Box.
And ask for a phone number#
Add a phone number question to the booking form for appointments where you would want to reach somebody quickly. It is on the booking when you need it. Booking form questions
Common questions
Does Business Box send LINE messages?
No. There is no LINE integration at all — no messages, no login, no rich menu connection. Confirmations and reminders are email.
Does it send SMS reminders?
No. Email only.
Can I still use LINE to get bookings?
Yes — put your booking link in a rich menu, a greeting message or a broadcast. The booking page works in LINE’s in-app browser. Only outbound messaging is missing.
How do I know if a customer never received their email?
The booking is flagged Not notified and you are emailed once about it, so you know to contact them another way.
Last reviewed 28 September 2026.