Outlook appointment reminders your clients actually get
Outlook is brilliant at reminding you about your day. It has no way to text your clients about theirs. Remindlo reads your Outlook calendar and sends the SMS and email reminders for you, so fewer people forget and fewer slots go empty.
Outlook appointment 14:30
SMS reminder sent
No-shows
-29% in 30 days
Service businesses recover an average of 30% of lost appointments once reminders go out automatically.
What Outlook does, and what it leaves to you
Outlook already knows when every appointment is and who it is with. The gap is everything that has to reach the client.
Outlook on its own
Outlook + Remindlo

Fewer no-shows
A text lands where your client actually looks. Reminders reach them at the moment they decide whether to turn up, which is exactly when a forgotten slot turns into lost revenue.
Zero extra admin
You carry on booking in Outlook exactly as you do today. Remindlo picks the appointments up on its own. No double entry, no new system for your team to learn.
Slots you can resell
Send the first reminder a few days out and clients who cannot make it tell you early, while there is still time to fill the gap with someone on the waiting list.
How the Outlook integration works
Four steps, about ten minutes, and nothing to install in Outlook.
Publish your calendar link
In Outlook on the web, open Settings > Calendar > Shared calendars and publish the calendar you book clients into. Outlook gives you a private, read-only link.
Paste it into Remindlo
Add the link once under Integrations. Remindlo runs a test fetch, tells you how many appointments it can see, and keeps checking every hour from then on.
Keep phone numbers on the event
Remindlo reads the client's mobile straight from the appointment. Anything without a number lands in Calendar Leads, so it is never quietly dropped.
Choose when reminders go out
Most businesses send one three days ahead and one the day before. Pick a ready-made template or write your own, and the reminders send themselves.
What you get once it is connected
On a locked-down Microsoft 365 tenant?
Some IT administrators switch calendar publishing off across the whole organisation. If the Publish option is missing from your settings, that is what happened, and you do not need to raise a ticket. Connect Outlook through Zapier instead: it reads the calendar through Microsoft Graph, which your work account already trusts, and triggers the same Remindlo reminders in near real time.
The reminder your calendar cannot send
Appointment reminders protect next week's revenue. The bigger win is the appointment that was never booked: the boiler service due in twelve months, the MOT due next spring, the check-up six months out. That client is not in your calendar, so Outlook has nothing to remind anyone about. Remindlo keeps the service interval against each client and gets in touch before they drift to whoever advertises first.
Who this is for
Outlook is the calendar most professional services live in. If your week is a column of client appointments in Microsoft 365, this is built for you.
Want the technical detail first?
The full walkthrough covers each flavour of Outlook, which publish permission level to choose, what the hourly refresh means in practice, and how the Zapier fallback compares.
Three ways to automate Outlook reminders
Built-in reminders, the calendar link and Zapier, compared side by side.
Step-by-step setup
Publishing the link, connecting the feed and sending your first reminder.
FAQ: Outlook + Remindlo
Common questions about SMS reminders for Outlook and Office 365.
Put your Outlook calendar to work
Connect it in minutes, send your first ten reminders free, and measure the no-show rate before and after.