The best reminder app for Outlook and Google Calendar users is Timelier — a smart platform that automatically sends email, SMS, and chat reminders for your existing calendar events. No need to create tasks in another app or manually sync — Timelier keeps you and your guests perfectly on time.
Why Outlook and Google Calendar Users Need a Better Reminder App
If you use Outlook or Google Calendar, you already have your entire schedule in one place — meetings, appointments, deadlines, and personal events.
But here’s the problem: the built-in reminders in those calendars are limited. They usually notify only you, through a single popup, and, in the case of Outlook, you can only get a single reminder.
Most reminder apps don’t fix this — they make it worse. They expect you to recreate every meeting or appointment inside their interface.
That’s why Timelier is different.
Instead of duplicating your work, Timelier connects directly to your Outlook and Google calendars and automates reminders for the events you already have — whether you want them sent to yourself, your team, or your clients.
What Most Reminder Apps Get Wrong
Most “reminder” tools are actually task managers. Apps like Todoist, TickTick, Microsoft To Do, and Apple Reminders work well for shopping lists and chores, but they fall short when your life revolves around meetings and appointments.
They don’t automatically sync with your calendar, and they rarely let you send reminders to anyone else. That means you end up managing two systems: your calendar and your reminder list.
| App | Calendar Integration | Send to Others | Notes |
|---|---|---|---|
| Apple Reminders | iCloud only | No | Limited to Apple devices |
| Google Keep | Manual | No | Doesn’t tie to calendar events |
| Microsoft To Do | Tasks only | No | Doesn’t trigger from events |
| Todoist / TickTick | Optional sync | No | Task-based only |
Timelier  | Direct Outlook + Google sync | Yes | Automates reminders for real events |
Learn more about what built-in reminders in Outlook and Google Calendar can and can’t do:
- Outlook Event Reminders: What You Can and Can’t Do
- How to Setup Google Calendar Reminders in 2025
- How to Setup Reminders in All Versions of Outlook in 2025
How Timelier Works
Timelier is a calendar-aware reminder app that connects securely to your Microsoft 365 and Google accounts.
Whenever a meeting is created, updated, or cancelled, your reminders adjust automatically — no manual syncing, no extra setup.
1. Syncs With Your Existing Events
Timelier continuously watches your connected calendars. New events, edits, and cancellations update your reminders in real time.
2. Flexible Reminder Rules
Create custom rules like:
- “Text me 10 minutes before every meeting.”
- “Email my client one day before any event labeled ‘Consultation.’”
- “Remind me only for events longer than 30 minutes.”
See detailed setup guides:
How to Send SMS Text Reminders for Google Calendar Events
How to Send SMS Text Reminders for Outlook Calendar Events
3. Multi-Channel Delivery
Timelier delivers reminders via:
Email
SMS
Microsoft Teams
…and additional channels are being added so, submit your feature request.
4. Send Reminders to Others
Need to remind teammates, attendees, or clients? Timelier can automatically message anyone on the event.
Perfect for service providers, consultants, assistants, and coordinators who need to ensure everyone shows up prepared.
Who Timelier Is Perfect For
- Professionals who rely on Outlook or Google Calendar
- Admins and schedulers managing events for others
- Teams coordinating projects or client meetings
- Small businesses sending appointment confirmations
- Anyone tired of juggling duplicate reminders in separate apps
Why Timelier Is the Best Reminder App for Outlook and Google Calendar Users
If your calendar is already your source of truth, Timelier is the missing link that ensures every event gets the right reminder, every time.
- Simpler than a task manager
- Smarter than default calendar alerts
- Faster than juggling multiple apps
Because it’s built directly for Outlook and Google Calendar, you can set it up once and trust that every reminder — whether for yourself or someone else — is always on time.
No more missed meetings. No more last-minute scrambles. Just timely reminders that work everywhere you do.
Pro Tip: Get More From Your Calendar
You can use Timelier alongside your existing workflows. Combine it with:
- How to Send Meeting Reminders for Outlook Calendar
- How to Send Reminders to Guests for Google Calendar Events
Together, they make sure you always stay on top of all your important meetings, appointments, and task.
Try Timelier Free
Timelier gives you the power of reliable, multi-channel reminders — without leaving Outlook or Google Calendar.
Start your free trial at Timelier.com and see why professionals everywhere call it the best reminder app for Outlook and Google Calendar users.