The appointment reminder system that texts clients for you.

Automated WhatsApp and email reminders for coaches, therapists, tutors and consultants in India. Every booking is confirmed, reminded and followed up without you typing a word.

Free plan, no card needed WhatsApp and email Built for India
BS
Book A Sloth
Business account
Hi Aarav, your Physio consult with Meera is confirmed for Thu, 10 Oct at 5:00 PM.
2:14 PM
Reminder: your Physio consult with Meera is tomorrow at 5:00 PM. Directions: maps.app/clinic
Wed 5:00 PM

Illustration of the messages a client receives. Real wording may differ.

01
WhatsApp + email

Every booking confirmation goes out on both channels.

02
24 hours

A reminder before every session, on Sloth and Sloth Active.

03
1 hour

A second, last-call reminder on Sloth Active.

04
Both sides

Your client gets reminded, and so do you.

Stop texting every client by hand.

Confirming, reminding and resending links is a second job. Here is the same week, both ways.

You, typing each one
Hi! Just confirming our session tomorrow at 5?
Hey, reminder, we start in an hour.
Did you see my last message?
Here is the Meet link again…

Now repeat that for every client, every week. The one you forget to send is the one who forgets to show up.

Book A Sloth, automatically
  • Confirmation sent the moment they book
  • Reminder sent 24 hours before
  • The Meet link or your directions, right in the reminder
  • Cancellations reach both of you on their own

You set up your booking page once. Every message after that sends itself.

One booking. Every message after it.

  1. 01

    Your client books

    They pick a slot on your booking page and verify their phone with an OTP. That number is where WhatsApp messages go.

  2. 02

    Both of you get a confirmation

    A WhatsApp message and an email go to your client, and a new-booking notice comes to you. With Google Calendar connected, online sessions get a Meet link.

  3. 03

    Reminders fire on schedule

    24 hours before the session, for both of you, with the Meet link or your directions. Sloth Active adds a reminder 1 hour before.

  4. 04

    The thank-you follows

    After the session your client gets a thank-you with a link to review you. On Sloth Active, rebook nudges follow on day 3 and day 21.

Every event, every channel.

What goes out, where it goes, and who gets it.

Which notifications go out on WhatsApp and email, to whom, and on which plan
Event WhatsApp EmailWho gets itPlan
Booking confirmationClient + youBoth plans
24-hour reminderSloth: first 2 months, then emailClient + youBoth plans
1-hour reminderClient + youSloth Active
Reschedule noticeClient + youSloth Active
Cancellation noticeClient + youBoth plans
Thank-you + review linkClientBoth plans
Rebook nudge, day 3 + day 21ClientSloth Active

WhatsApp goes to the phone number your client verified when booking. Email goes to clients who added one.

Directions or a join link

Online sessions carry the Meet link. In-person ones carry your map link once you add it, so nobody asks where to come.

Clients stay in control

A client who replies STOP stops getting WhatsApp messages. Their booking codes still arrive.

Alerts in your dashboard

New bookings, cancellations and reschedules also show up as in-app notices in your dashboard.

Flip the plan. See what fires.

Sloth covers the essentials for free. Sloth Active adds the last-call reminder, reschedule alerts and rebook nudges.

  1. 01
    Booking confirmation
    The moment they book
    Fires
  2. 02
    24-hour reminder
    A day before. WhatsApp for your first 2 months, then by email
    Fires
  3. 03
    1-hour reminder
    An hour before
    Sloth Active
  4. 04
    Reschedule on WhatsApp + email
    When a time changes. Sloth shows an in-app notice instead
    Sloth Active
  5. 05
    Cancellation notice
    When a booking is cancelled
    Fires
  6. 06
    Thank-you + review link
    After the session
    Fires
  7. 07
    Rebook nudges
    Day 3 and day 21 after
    Sloth Active

Sloth Active is ₹399 a month or ₹3,599 a year, GST included, with 0% commission on your bookings. Compare plans

“My patients forget appointments easily. The reminder texts have honestly been a lifesaver.”
Dr. Yukta Bawankar
Physiotherapist
“Half my day used to go in 'is a cabin free at 4?' WhatsApps. Now people just book it themselves.”
Mukesh Tidke
Coworking Space Owner
“Clients book site-visit slots straight off my link and pay upfront. No more chasing dates over WhatsApp.”
Ar. Pranav Kadoo
Architect

Reminder questions, answered.

01Does Book A Sloth send automatic appointment reminders on WhatsApp?

Yes. Every booking gets a reminder 24 hours before the session, sent to your client and to you on WhatsApp and email. Sloth Active adds a second reminder 1 hour before.

02Are WhatsApp reminders free on Sloth?

For your first 2 months, yes. After that, Sloth reminders go out by email only. Hosts who joined before 1 October 2026 get their 2 months from that date. On Sloth Active, reminders stay on WhatsApp for as long as you subscribe. Booking confirmations and cancellations go out on WhatsApp on both plans.

03What happens if a client books at the last minute?

If the session is already inside the reminder window when they book, a reminder goes out straight after the confirmation, so no one is skipped.

04Do I get notified too?

Yes. You get your own confirmation for every new booking, the same reminders before each session, and notices when a booking is cancelled. They also appear in your dashboard.

05What happens when a booking is rescheduled or cancelled?

Cancellations notify both of you on WhatsApp and email on every plan. Reschedules go out on WhatsApp and email on Sloth Active. On Sloth, a reschedule shows up as an in-app notice instead.

06Can I change when reminders are sent?

Not at the moment. Reminders run at fixed times: 24 hours before on every plan, plus 1 hour before on Sloth Active. Times are written in your time zone.

07Will my client get emails as well?

If they added an email when booking, yes. Clients book with their phone number, so WhatsApp always goes to the number they verified, and email goes wherever one was given.

08Can a client stop the WhatsApp messages?

Yes. Replying STOP turns off WhatsApp messages for that number. One-time booking codes still arrive so they can keep booking.

Let the reminders chase them.

Set up your booking page free. Confirmations and reminders start with your first booking.