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Clerk Chat Business Messaging Platform

Transform your business landline into a textable phone number. Enable your current number for sms texting and give your customers a whole new way to interact with your business.

How it works

Meet Your Modern Business Phone

Give your business phone line super-powers

Step 1

Connect Your Phone

Either bring your existing number, or choose your own

Step 2

Sync Contacts

Bring in your existing contacts and relationships right into Clerk

Step 3

Start Texting

Using your number start letting customers know they can text you

Ready to transform your business?

Enable VoIP / Landline

Let's get started
Clerk Webapp

The #1 Business Phone App

Customers love texting. Text messaging has become the go-to way to engage with your business. It's light, non-invasive, and its immediate.

SMS For Sales

With a read rate of over 90% start sending promos and offeres to drive either in store or online revenue.

SMS For Support

Phone lines get jammed, texting doesn't. Give your customers immediate support help with your existing business number.

Text From Your Existing Number

Connect your carrier and enjoy all of the benefits and features of Clerk while keeping your service provider contracts, phone numbers, and rates.

VoIP / Landline

Enable SMS capabilities on your existing VoIP or a landline.


Enable your Twilio phone number in Slack and consolidate communication.

Zoom Phone

Host the SMS portion of your Zoom phone number and use it directly in Slack.


Enable your Vonage phone number in Slack and consolidate communication.

Google Voice
Google Voice

Consolidate your google voice conversations in Slack


RingCentral for Slack integration brings your phone number natively into Slack.

Industries that love Clerk

Start texting your customers today. Keep your company’s text messages organized and secure with Clerk.


Reach your customers faster and grow your customer base more efficiently. Close sales by answering customer questions quickly.

Law Firms

Attorneys, paralegals, and assistants can schedule and confirm legal appointments, submit document requests, and confirm court dates.

Insurance Agencies

Send text messages to reach your team on the mobile devices that they are already using.

Clerk SMS
Real Estate

Connect with prospects and close more deals. Create a better customer experience.

Support Teams

Increase efficiency of your support teams and handle multiple customer issues simultaneously.

Medical Offices

Send SMS to confirm appointments, change treatments, or ask questions. SMS enable your business phone number, while keeping the existing voice service intact.

Sync your Contacts

We've built dedicated integrations to help you import your contacts from the leading systems such as Hubspot, Google, Salesforce and CSV...

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Use Salesforce and Slack together to manage your conversations.

Google Contacts
Google Contacts

Import your contacts directly from Google contacts.


Load your Hubspot contacts and lists and start texting your customers.

Google Sheets
Google Sheets

Use sheets as a universal addressbook. Import CSV, share with teammates...

Clerk Apps

We've built native integrations into the leading applications such as Slack, Microsoft Teams, and Salesforce. Leverage the power of SMS wherever your team lives.

Slack SMS
Slack SMS

Bring your business phone to Slack and start text messaging your customers in real-time.

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Clerk Email
Slack Email

Centralize your email and respond to customer and vendor requests with the entire team in Slack.

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Salesforce SMS
Salesforce SMS

Send and receive text messages with your existing contacts, and leads natively in Salesforce.

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Clerk MFA
Non VoIP

Receive your account verification codes easily, and securely from all online services.

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Trusted by leading companies

From startups to the Fortune 500, Clerk is the most visual and simple way for teams to comminicate via text message in Slack.

Samsung Next
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Chris Carella
Five Four Ventures

I have used many tools over the last 5 years to communicate with my customers over SMS and Clerk has been, by far, the fastest and easiest way to get setup. In no more than 5 minutes I had a phone number connected to a Salesforce channel and was communicating seamlessly with customers.

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Stella Fulman
Audiology Island

Clerk has revolutionized how our office communicates with patients. Our patients have given us great feedback on how easy communication has become with our staff. We’ve always prided ourselves on being industry leaders for hearing treatment; now, we can be industry leaders for technology, too.

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James Patrick
Clayton Asset Group

Clerk offers some of the best customer service around. We installed Clerk and had questions on how to send an SMS campaign from Salesforce. We reached out and were able to get Clerk support team on a call with us in a matter of minutes. They helped our team get up and running in no time.

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Nick G.
Stillwater Properties

After searching for hours and hours for an app that would be capable of sending mass sms texts using a different number, I finally came across clerk. It is painless to setup, very powerful and at the best price point. I have never experienced such good customer support in an app. Highly recommend!

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Ronald Savage
Greenworks Realty

Wow! Incredble that this is all built on top of Salesforce. I played around with the Hubspot integration and was shocked how seamless and quick the experience was. Clerk really cuts down on response time when communicating with our clients. It has become essential toolbox in our arsenal.

Helpful answers

We know there's a lot to learn and read about all that Clerk can do. Here are some of the most frequently asked questions.

Optimize your landline phone number by enabling text messaging in minutes. Once enabled you can start sending and receiving SMS and MMS to customers in realtime.

Yes. Clerk allows you to have a unique phone number in every Slack channel.

Absolutely. Please reach out to and we will get back to you asap.

Clerk natively supports group messages. Group messages are a fast and convenient way to organize groups, set up events, or to send the same message to multiple people.

SMS standard has a character limit of 160 characters. Messages using non standard characters such as emojis are limited to 67 characters.

Clerk has a number of unique integrations with tools such as Hubspot, Gsuite, Salesforce.