Happy SMS + Rex Integrations
Put Happy SMS + Rex to work with AI and enterprise-grade automation
4.9/5 on G2·
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Workflows you can build between Happy SMS and Rex
See the kind of workflows teams build with Happy SMS and Rex below — describe the exact one you want above and the Agent builds it on demand.
Happy SMS + Rex
When an event occurs in Happy SMS, sync contact records to Rex.
Send text messages to newly created leads
When a new lead is created in Rex, automatically send a welcome SMS via Happy SMS to establish immediate contact.
See details
Log inbound calls and missed calls in CRM
When an inbound call or missed call occurs in Happy SMS, automatically log the activity on the contact's record in Rex.
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Dispatch text confirmations on won deals
When a deal is won in Rex, send an automated SMS via Happy SMS to confirm details with the client.
See details
Browse the full workflow library →
Looking to achieve something else with Happy SMS and Rex?
Just describe what you need — the Agent researches both APIs and builds the real automation on demand.
Try Knit FreeTriggers & actions for Happy SMS and Rex
Everything Happy SMS and Rex can do inside a workflow — the triggers that start one and the actions that run when it fires.
Happy SMS Explore Happy SMS →
Happy SMS is a communication tool that allows businesses to send automated text messages and customer notifications.
ActionsThis is an advanced action which makes a raw HTTP request that includes this integration's authentication
Retrieve the last modified SMS messages
Sends an SMS Message
Rex Explore Rex →
Rex is a customer relationship management software designed specifically for real estate agencies to manage listings and client leads.
TriggersTriggers when a Appraisal is Created.
Triggers when a Calendar Event is created
Triggers when a Calendar Event is updated
Triggers when a Contact is Created.
Triggers when a Contact is Updated.
Triggers when a Tag is added to a Contact
Sends an Email
Assigns a Lead to a user
Creates a Lead
Creates a Match Profile for a Contact (if one doesn't exist)
Creates a Note
Creates a Reminder
Other Phone & SMS apps on Knit
Explore more Phone & SMS integrations you can automate with Knit — or describe a custom workflow and the Agent builds it.
46elks
46elks is a developer platform offering cloud telecommunication APIs to send and receive SMS messages, MMS, and manage phone calls.
Aircall
Aircall is a cloud-based phone system and call center software integrated with sales and support tools for business communication.
allmysms
allmysms is a mobile messaging platform providing bulk SMS sending, two-way texting, and automated message notification services.
Aloware
A contact center and cloud phone system providing automated calling, texting, and sales dialer capabilities for teams.
AvidMobile
A mobile marketing platform offering SMS text messaging, mobile coupons, and bulk messaging services for businesses.
Avochato
Avochato is a phone and SMS communications platform that enables businesses to handle customer text messaging and call management.
Beetexting
Beetexting is a business text messaging platform that enables teams to send SMS messages, manage group conversations, and build relationships.
Berkshire Receptionists
Berkshire Receptionists provides virtual receptionist services, managing business phone calls, message taking, and call handling for organizations.
Other CRM apps on Knit
Explore more CRM integrations you can automate with Knit — or describe a custom workflow and the Agent builds it.
10xCRM
10xCRM is a customer relationship management solution that helps sales teams organize contacts, track pipelines, and automate communications.
17hats
17hats is a business management and CRM software designed for solo entrepreneurs and small businesses to handle client workflows and invoicing.
1CRM
1CRM is an all-in-one customer relationship management solution for small and medium businesses to manage leads, orders, and service requests.
AccuLynx
AccuLynx is a dedicated roofing business management software designed to streamline contracting estimates, field management, lead tracking, and client communications.
Act!
Act! is a customer relationship management and marketing automation solution designed to manage sales pipelines, customer records, and communication histories.
Actionstep
Actionstep is a cloud-based law practice management platform that includes legal CRM, matter management, and billing tools.
Advyzon
Advyzon is an all-in-one financial advisor management platform combining client reporting, billing, document management, and CRM features.
Aesthetic Record EMR
Aesthetic Record EMR is an electronic medical records and practice management solution designed specifically for medical spas and aesthetic clinics.
Customer Stories
See how leading technology firms are scaling their operations
Amazing Product With Exceptional Support from the team. By using Knit we managed to speed up our development by orders of magnitude.
A brilliant tool to let you seamlessly integrate with many different systems. It is very easy to integrate with and customer support is next level.
Seamless integration experience. Well-documented, self-explanatory APIs, and excellent service and support.
Easy to integrate. Knit's dashboard is intuitive for setting up and testing integrations, and the sandbox is extremely useful during development.
Knit shipped a brand-new Timesheet API in a week and handed us a ready-to-use NetSuite sandbox. That velocity is priceless when you're running payroll in 40+ countries.
#1 in Ease of Integrations
4.9 out of 5 stars on G2
Common questions about Happy SMS + Rex
Is there a pre-built Happy SMS + Rex automation?
Not yet, but Knit's Integrations Agent can build one — describe what you want and it researches Happy SMS and Rex's public API docs (or your own uploaded docs) and builds a working automation.
Does this require a pre-built Happy SMS or Rex connector?
No. The Agent works whether or not Happy SMS or Rex already has a pre-built connector in Knit's catalog — it researches the real API surface either way.
How long does it take to build?
Minutes to build a first working version, not weeks — you test it against real data before it goes anywhere near production.
How does connecting Rex and Happy SMS help track phone communications?
Inbound calls, text messages, and missed calls handled in Happy SMS can automatically log activities or update lead profiles directly inside Rex.
Can I automate text message follow-ups when deal stages change?
Yes, updating a deal stage in Rex can prompt Happy SMS to send an automated SMS confirmation or message to the client.