How to Connect Google Calendar to WhatsApp with DMHub

Google Calendar is the default scheduling tool for millions of businesses. But its reminder system is limited to email and browser notifications — channels that are easy to miss or dismiss. For client-facing businesses where a missed appointment means lost revenue, Google Calendar reminders aren't enough.

DMHub bridges Google Calendar and WhatsApp so every event triggers a personalized WhatsApp message to the right person at the right time.

Step-by-Step Setup

Step 1: Connect Google Calendar

1. Go to Settings > Integrations > Google Calendar in DMHub
2. Click Connect and authorize with your Google account
3. Select which calendars to sync (you can connect multiple)
4. Choose sync direction: one-way (Calendar to DMHub) or bidirectional

Step 2: Map Events to Contacts

DMHub matches calendar event attendees to your contact list using email and phone number. When a match is found, the contact's WhatsApp number is used for reminders.

For events without matched contacts, you can:

• Add the client's phone number to the calendar event description
• Use a custom field in Google Calendar for WhatsApp numbers
• Manually assign contacts in DMHub

Step 3: Create Reminder Automations

24-Hour Reminder: ``` Hi {{name}}, reminder about your appointment tomorrow.

{{event_title}} Date: {{date}} Time: {{time}} Location: {{location}}

Reply CONFIRM to keep, or RESCHEDULE if you need a different time. ```

1-Hour Reminder: ``` Your appointment starts in 1 hour.

{{event_title}} at {{time}} {{location_or_link}}

See you soon! ```

Post-Meeting Follow-Up (30 minutes after event ends): ``` Thanks for your time today, {{name}}.

Here's a summary of what we discussed: {{summary_or_link}}

Next steps: {{next_steps}}

Questions? Just reply here. ```

Use Cases

Lawyer in Beirut: Client meeting reminders with case file references. Clients can reply with questions before the meeting, reducing prep time for both parties.

Dentist in Mexico City: Appointment reminders that include pre-visit instructions (no eating 2 hours before, bring insurance card). No-shows dropped 45%.

Consultant in Singapore: Post-meeting summaries with action items sent via WhatsApp. Clients have a searchable record of every meeting in their chat.

Tutor in Cape Town: Lesson reminders with the topic and materials link. Students arrive prepared because they actually saw the reminder.

Advanced: Two-Way Calendar Sync

When a client replies "RESCHEDULE" to a WhatsApp reminder, DMHub can:

1. Show available slots from your Google Calendar
2. Let the client pick a new time via WhatsApp
3. Update the Google Calendar event automatically
4. Send a new confirmation to both parties

The entire rescheduling flow happens in WhatsApp. No links to click, no forms to fill, no phone calls to make.

Getting Started

Google Calendar tracks your schedule. WhatsApp reaches your clients. DMHub connects them so every appointment is confirmed, reminded, and followed up on — automatically.

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Ready to connect Google Calendar to WhatsApp? Start free with DMHub — no credit card required.