Call blocking

Chalkboard’s call-blocking feature allows you to block unwanted calls and messages.
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Say goodbye to scammers

With call blocking, you can add specific numbers to a block list. This ensures that you only receive the calls that matter most to you and your business.

But Chalkboard's call-blocking feature isn't just about blocking unwanted calls – it's also about protecting your privacy and security. With our app, you can block calls from scammers and even robocalls. This can help to reduce the risk of fraud and protect your personal information.

How does Chalkboard's call blocker work?

You can block a call through Chalkboard quickly, and with no hassle.

Blocking a number can be achieved in multiple ways and managed from the Block list settings page.

3 ways to block a number:

Select the message thread within the Messages tab, click the three dots (at the top right) and select Block number.

Select the number from the Calls tab you're attempting to block and tap on Block number.

Tap on your user avatar (top left), then tap Manage workspace, select Block list and then Block a number.

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More than just a call-blocking app

Auto-reply to missed calls

Never miss a business call again with auto-reply.

Chalkboard’s auto-reply automatically sends a pre-written message to missed callers. You can customise your messages too, ensuring that callers receive the information they need, even when you miss their call.


With Chalkboard’s voicemail-to-text, you can easily read your voicemails in text form, rather than listening to them. This is perfect if you’re on the move, or in a noisy environment and want to quickly scan and prioritise your voicemails.

Separate work and business contacts

No more merged phonebooks, keep personal and business contacts separate. Your personal calls come from your personal number, while all your business-related calls will come from your Chalkboard virtual phone number.

The easy way to share phone numbers with your team

Chalkboard gives you all the business calling and messaging features you need, without a phone system.

Completely flexible

Text and call as a team with shared or private numbers. Flexible and simple.

Takes minutes to set up

No contracts, no phone system, no SIM cards, and no configuration. Just install the app and go!

All the features you need

Including missed call auto-reply, working hours, templates, and much more...

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Get started today

It's the easy way for your team to text and call together without the hassle and complexity of a phone system!

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FAQs: Call blocking

What is call blocking?

Call blocking is a feature that is available in most business phone systems that automatically block phone calls from unwanted numbers.

How do I block phone calls?

Want to block those pesky phone calls for good? No problem!

Most phones come with a built-in call-blocking feature, so you can easily add those unwanted numbers to your blocked caller list. The next time they call, they'll hear a busy signal briefly and you will say goodbye to those unwanted calls.

What’s the difference between blocking a number and blocking a contact in Chalkboard?

Occasionally, you might want to stop a saved contact in your phonebook from being able to reach you rather than just deleting the number(s).

Chalkboard enables you to block an entire contact in one go so that if there are multiple numbers saved, you can apply a block to all. Simply head to your Phonebook, select the relevant contact, choose if you want to retain the message and call history and then select the Block button. That’s it!

Can I contact someone that's blocked on Chalkboard?

No, you won’t be able to make calls or messages unless you unblock the number. However, you can easily unblock a number in your Chalkboard phonebook.