
More conversations. Fewer interruptions.
Direct call to our German Call0 number.
Try it yourself: Call0 calls you.
Free and non-binding. Your number is only used for this one call.
100% GDPR compliant
Companies working with Call0
One workspace for every conversation
Understand calls. Complete tasks. Keep everything documented.
Call0 connects calls, messages, knowledge and your systems. You define the behavior — the assistant handles the repetitive work.
Use cases
This is what a calmer workday can sound like.


New requests are captured while the team is still out on the job.
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Maintenance reports arrive with structure, not as incomplete voicemail.
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Recurring guest questions are answered without tying up reception.
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Client requests are sorted without pretending to provide professional advice.
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Service requests reach the right team with vehicle and callback context.
View scenarioNo technical knowledge required
From the first idea to a reachable assistant.
Three clear steps bring voice, knowledge and your existing workflows together.
Create your assistant
Choose a voice and describe in your own words how Call0 should represent your business.
Call0 Reception
Mila · English
Define its behavior
Set what the assistant may know, which actions it performs and when your team takes over.
Active workflow
LiveConnect and test
Connect your phone number, calendar and CRM. A test call shows the entire workflow immediately.
Test call completed
00:48 · successful
Result
Appointment request recognized and added to the calendar.
Solutions
One assistant. Many clear tasks.
From the first question to the completed action, Call0 adapts to the exact workflow your team needs.
Customer service
Answer common questions and capture complete requests.
Appointment booking
Check availability, schedule appointments and send confirmations.
Reception
Sort calls and route them to the right person.
Answering service
Turn messages into structured summaries.
Outbound
Run callbacks, reminders and clearly defined campaigns.
WhatsApp & email
Email is available; WhatsApp is currently in maintenance mode.
Integrations
Call0 connects calls with your workflows.
Use connected services for appointments, email, CRM records and team notifications. Available actions depend on the service and your configuration.
Explore integrationsBuilt for real operations
Clearly configured. Reliably traceable.
Controllable privacy
Roles, data flows and retention remain transparently configurable.
Multilingual
One assistant can conduct conversations in multiple languages.
On your schedule
Around the clock, as overflow coverage or only outside business hours.
Frequent questions
Listen to the available voices and test the agent yourself. Call0 clearly tells callers that they are speaking with an AI assistant.
Ready to never leave an important call unanswered?
Try Call0 yourself or schedule a personal demo for your workflow.