Slack
SMS.to
Twilio

Slack + SMS.to + Twilio integrations

Automate contact management, customer follow-ups, missed call recovery, trackable link sharing, and team alerts across Slack, SMS.to, and Twilio.

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Popular automation
Trigger
Message is received
in Twilio
Instant
Actions
Create contact
in SMS.to
Send channel message
in Slack

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Ready Workflows Ready Workflows   for Slack + SMS.to + Twilio integration

Save new contacts, send follow-up texts, recover missed calls, share tracked links, and alert your team, all in just one click.

Slack
SMS.to
Twilio
Activate

Add everyone who texts your Twilio number to SMS.to and post them in Slack

Message is received in Twilio→Create contact in SMS.to→Send channel message in Slack
Anyone who texts your Twilio number is saved as an SMS.to contact, and your sales Slack channel sees them straight away.
A real estate team gets texts from property enquiries on its Twilio numbers. Without a workflow, someone has to copy each sender into SMS.to before any follow-up can start. This setup does that the moment a text arrives, so nobody misses an enquiry that came in after hours.
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Slack
SMS.to
Twilio
Activate

Save every caller who leaves a Twilio voicemail as an SMS.to contact and share the transcript in Slack

Transcription is available in Twilio→Create contact in SMS.to→Send channel message in Slack
When a voicemail is transcribed in Twilio, the caller is saved in SMS.to and the transcript lands in Slack for quick triage.
A customer support centre gets a lot of voicemails and needs to decide who to call back first. Someone usually has to listen, type notes and add the caller to a list by hand. This workflow saves the caller in SMS.to and posts the transcript to a Slack channel as soon as it is ready, so the team can sort calls faster.
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Slack
SMS.to
Twilio
Activate

Use AI to pull contact details from Twilio voicemails, save them in SMS.to and alert Slack

Transcription is available in Twilio→Analyze voicemail sentiment and extract contact details→Create contact in SMS.to→Send channel message in Slack
AI reads each Twilio voicemail transcript, saves the caller's details in SMS.to, and tells your Slack team what the call was about.
A medical clinic gets patient voicemails that are hard to sort, because callers describe their problems in different ways. Someone would otherwise read each message and copy out a name and number by hand. ChatGPT reads the transcript first, then the contact goes into SMS.to and the on-call nursing team sees a summary in Slack.
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Slack
SMS.to
Twilio
Activate

Create a trackable SMS.to link after each Twilio call, send it on WhatsApp and log it in Slack

Call is finished in Twilio→Create shortlink in SMS.to→Send WhatsApp message in Twilio→Send channel message in Slack
When a phone support call ends in Twilio, the customer gets a tracked SMS.to link on WhatsApp and your team sees it in Slack.
A field services business wants to send a short survey straight after a support call, without anyone copying links around. The workflow creates a trackable link in SMS.to, sends it on WhatsApp through Twilio, and logs it in Slack. The customer gets the survey while the call is still fresh, and the team can see who was sent what.
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Slack
SMS.to
Twilio
Activate

Text leads through SMS.to after a completed Twilio call and let sales managers know in Slack

Call is finished in Twilio→Check if call duration was greater than zero and call was completed→Send SMS in SMS.to→Send channel message in Slack
After each completed Twilio call, the lead gets a follow-up SMS.to text and your sales managers see it in Slack.
A telesales team makes many calls and needs leads to get a follow-up text after a real conversation, not after a call that never connected. The filter checks that the call was completed and lasted longer than zero seconds before anything is sent. That stops empty calls from triggering messages, and the managers see each follow-up in Slack.
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Slack
SMS.to
Twilio
Activate

Send new SMS.to subscribers a WhatsApp welcome through Twilio and alert the growth team in Slack

Contact is created in SMS.to→Send WhatsApp template message in Twilio→Send channel message in Slack
When someone joins your list in SMS.to, they get a WhatsApp welcome through Twilio and your growth team is alerted in Slack.
An online store collects new subscribers in SMS.to but has no quick way to welcome them on WhatsApp. Sending each welcome by hand is easy to forget, so new subscribers often wait days for a first message. This workflow sends the approved onboarding template as soon as the contact is saved, and the growth team sees each new subscriber in Slack.
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Slack
SMS.to
Twilio
Activate

Call new SMS.to contacts through Twilio to verify them and tell dispatch in Slack

Contact is created in SMS.to→Call phone in Twilio→Send channel message in Slack
When an emergency contact is added in SMS.to, Twilio places a verification call and your dispatch team is told in Slack.
A roadside assistance company needs to confirm emergency contacts quickly, because a wrong number can cost time when someone is stuck on the road. Staff would otherwise have to dial each new contact by hand. The call starts as soon as the contact is saved in SMS.to, and dispatch sees it in Slack so they know the check is underway.
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Slack
SMS.to
Twilio
Activate

Turn new SMS.to signups into HubSpot leads, text them through Twilio and announce them in Slack

Contact is created in SMS.to→Create lead in HubSpot→Send SMS in Twilio→Send channel message in Slack
Each new newsletter signup in SMS.to becomes a HubSpot lead, gets a confirmation text through Twilio, and is announced in Slack.
A SaaS marketing team wants every newsletter signup to reach the CRM and get a confirmation text, without anyone copying details between tools. Done by hand, some signups would never reach the sales pipeline. This workflow handles all three steps as soon as the contact is saved, and the marketing channel in Slack sees each new person.
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Slack
SMS.to
Twilio
Activate

Send each new SMS.to promo link to VIP clients on WhatsApp through Twilio and log it in Slack

Shortlink is created in SMS.to→Send WhatsApp message in Twilio→Send channel message in Slack
Every new promotional shortlink in SMS.to goes out to your VIP clients on WhatsApp through Twilio, and Slack logs the send.
A marketing agency makes trackable promo links in SMS.to for different client groups. Sending each link on WhatsApp by hand means checking lists and copying links, which is slow and easy to get wrong. This workflow sends the new link to the chosen group through Twilio, and the internal team sees it in Slack.
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Slack
SMS.to
Twilio
Activate

When a team member reacts in Slack, create an SMS.to link and text the client through Twilio

Reaction is added in Slack→Create shortlink in SMS.to→Send SMS in Twilio
A reaction on a Slack message creates a tracked SMS.to link and sends the client an SMS update through Twilio.
A customer success team reviews escalated cases in Slack and wants a person to approve each update before it goes out. Using a reaction as the approval keeps someone in charge without copying links into a text. The client gets a trackable link by SMS through Twilio, and the team never has to leave the Slack thread.
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Steps to connect Slack, SMS.to and Twilio

  1. Log in to Integrately
  2. Search and select Slack and SMS.to
  3. Pick a ready 1-click automation or select the desired trigger-action pair
  4. Securely connect your Slack & SMS.to accounts
  5. Add Twilio in the next steps of your workflow
  6. Map the fields across all three apps
  7. Test it, then switch it on Done
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How the data usually flows between Slack, SMS.to and Twilio

A caller's details start in Twilio, get saved in SMS.to, and end up with your team in Slack.

Twilio
Twilio
The moment someone texts your number, calls in or leaves a voicemail, the workflow starts. Nobody has to check the phone line by hand.
Start
SMS.to
SMS.to
Their details go into SMS.to, so the person is stored in one place with their number ready for messages. You don't have to copy numbers into a contact list yourself.
Save
Slack
Slack
A message lands in the right Slack channel with what happened. People can pick it up without opening another app.
Share
Twilio
Twilio
With the contact saved and the team aware, a text, WhatsApp message or call can reach the customer quickly. They hear back while they still need you.
Follow up
ai-icon
Fully Automated
Once set up, your data moves seamlessly
between Slack, SMS.to and Twilio.
Slack
SMS.to
Twilio
One continuous flow, Zero extra effort.
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Supported triggers and actions

A trigger is what starts the automation. An action is what it does next. Mix any of these across the three apps.

Slack
Slack Triggers & Actions
Message is posted on private channel in Slack
Triggers the automation when a message is posted on a private channel
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Group message is received in Slack
Triggers the automation when a group message is received
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Direct message is received in Slack
Triggers the automation when a direct message is received
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Reaction is added in Slack
Triggers the automation when someone reacts to any message
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Channel is created in Slack
Triggers the automation when a new channel is created
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Custom emoji is added in Slack
Triggers the automation when a custom emoji is added
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User is created in Slack
Triggers the automation when a new user is created
Try it →
File is created in Slack
Triggers the automation when a particular action in the workflow fails
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Get thread messages in Slack
Retrieves messages in a specific thread
Try it →
Search user in Slack
Searches for a user
Try it →
Send channel message in Slack
Sends a channel message
Try it →
Send direct message in Slack
Sends a private message to a recipient
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Send private channel message in Slack
Sends a private message to a channel
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Reply to channel message in Slack
Replies to a channel message
Try it →
Search message in Slack
Searches for a message
Try it →
Invite user to channel in Slack
Sends an invitation to a user to join a channel
Try it →
Search user by email in Slack
Retrieves user information based on their email address
Try it →
Update profile in Slack
Updates the user's profile
Try it →
Create channel in Slack
Creates a new channel
Try it →
Set channel topic in Slack
Sets the channel topic
Try it →
Get user by id in Slack
Retrieves user information using their id
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Set status in Slack
Sets the status
Try it →
Get Message Permalink in Slack
Retrieves the unique url link for a message within a conversation or chat
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Add reminder in Slack
Schedule and set reminder for a date and time
Try it →
SMS.to
SMS.to Triggers & Actions
Contact list is created in SMS.to
Triggers the automation when a contact list is created
Try it →
Contact is created in SMS.to
Triggers the automation when a contact is created
Try it →
Shortlink is created in SMS.to
Triggers the automation when a shortlink is created
Try it →
Send SMS in SMS.to
Sends a SMS
Try it →
Estimate SMS in SMS.to
Estimates the cost for SMS
Try it →
Create contact in SMS.to
Creates a new contact
Try it →
Create contact list in SMS.to
Creates a new contact list
Try it →
Create shortlink in SMS.to
Creates a new shortlink
Try it →
Twilio
Twilio Triggers & Actions
Instant
Message is received in Twilio
Triggers the automation when a new message (SMS/MMS) is received
Try it →
SMS is received/sent in Twilio
Triggers the automation when a new text message is received/sent
Try it →
Recording is available in Twilio
Triggers the automation when a recording is available
Try it →
Call status is changed in Twilio
Triggers the automation when call details are modified
Try it →
Call is finished in Twilio
Triggers the automation when a call is finished
Try it →
Phone number is added in Twilio
Triggers the automation when a phone number is added
Try it →
Transcription is available in Twilio
Triggers the automation when a transcription is available
Try it →
Send WhatsApp template message in Twilio
Sends a message using a predefined template on WhatsApp
Try it →
Get message media by id in Twilio
Try it →
Get message medias in Twilio
Try it →
Send SMS in Twilio
Sends a text message to particular recipients
Try it →
Send WhatsApp message in Twilio
Sends a message via whatsapp
Try it →
Call phone in Twilio
Initiates a phone call to a phone number
Try it →
Get call details by id in Twilio
Try it →

Who this setup is for

Customer support centres
Customer support centres
Clinics and service businesses
Clinics and service businesses
Sales and telesales teams
Sales and telesales teams
Marketing and growth teams
Marketing and growth teams
📋 Customer support centres
Your team handles a steady stream of calls and voicemails, and sorting them depends on someone listening and typing notes. This setup saves each caller, shares the summary in Slack, and keeps the queue moving.
🎙️ Clinics and service businesses
Customers call in during busy hours, and many calls go unanswered. This setup texts missed callers back and alerts the front desk, so nobody quietly drops off the list.
🔁 Sales and telesales teams
Your reps make many calls and need leads to get follow-up texts without manual copying. This setup sends follow-ups only after completed calls and tells managers what went out.
🗂️ Marketing and growth teams
You collect signups in SMS.to and want new people welcomed on WhatsApp or added to your CRM without copying details. This setup sends the welcome and posts each new person to your Slack channel.
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Everything this automation handles for you

Everything this automation handles for you
No duplicate contacts
Match on the phone number before adding someone, so the same caller does not get saved twice when the workflow runs again.
Auto-retry failed steps
If a text or Slack message does not go through the first time, the automation can retry it instead of leaving the workflow half-finished.
Only act on real calls
Filters and conditions check the call status and length first, so empty or missed calls only trigger the messages you actually want.
Updates existing contacts
If a caller is already in SMS.to, their details are updated instead of creating a second contact, so your list stays tidy.

Why choose Integrately to automate Slack + SMS.to + Twilio

Build and manage your Slack + SMS.to + Twilio automations with ready-made flows, AI assistance, 24x5 reliable human support, and enterprise-grade security.

1,500+ apps connected
1,500+ apps connected
Connect Slack + SMS.to + Twilio with email, CRM, messaging, finance, support, and other tools whenever your process needs another step.
20M+ Ready Automations
20M+ Ready Automations
Start with 20 million+ proven automation templates instead of building everything from scratch. Pick the closest flow, connect your accounts, and automate in minutes.
AI that builds your automations
AI that builds your automations
Describe your workflow in plain English. Integrately AI builds it, maps fields, adds conditions, and even lets you edit it through chat.
24x5 Live Chat Support
24x5 Live Chat Support
Chat with a real person and get reply within 2-5 minutes. No bots, no tickets, no waiting — just real help, right when you need it.
Free done-for-you setup
Free done-for-you setup
Tell our team what you need and we will help set up the automation in your account at no extra cost on any plan.
Secure by design
Secure by design
SOC 2 Type II and ISO 27001:2022 certified, with GDPR-compliant data practices. Your data and credentials are handled using recognised security and privacy standards.
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Prefer to connect just two apps? Explore each combination separately

Slack
SMS.to
Slack + SMS.to
Add new Slack team members to SMS.to as contacts automatically.
Explore Integrations
SMS.to
Twilio
SMS.to + Twilio
Send a WhatsApp welcome or confirmation text to new SMS.to contacts through Twilio.
Explore Integrations
Slack
Twilio
Slack + Twilio
Send a Twilio text when someone reacts to a message in Slack.
Explore Integrations

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Questions people ask

If a Twilio call is missed or busy, can SMS.to send the caller a text and Slack be alerted automatically?
Frequently Asked Questions
Yes, Integrately has a ready workflow for missed calls that texts the caller through SMS.to and alerts your team in Slack. When a call status changes in Twilio, Integrately checks whether the call was missed or busy. If it was, SMS.to sends the caller a text and a message goes to your Slack channel.
Can new Twilio texts automatically create SMS.to contacts and post them to Slack?
Frequently Asked Questions
Can Twilio voicemail transcripts be saved as SMS.to contacts and shared in Slack automatically?
Frequently Asked Questions
Do I need coding skills to connect Slack, SMS.to and Twilio?
Frequently Asked Questions
Can a Slack reaction trigger an SMS.to shortlink and send it to a client through Twilio?
Frequently Asked Questions
Can new SMS.to contacts automatically receive a WhatsApp welcome through Twilio and alert Slack?
Frequently Asked Questions
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