Customer.io + Reply Integration

Integrate Customer.io to Reply in one click, or tell Integrately AI how you want each contact handled. Track outreach responses, update person records in Customer.io, push contacts to campaigns in Reply, and trigger follow-ups automatically.

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1.
  • Reply
    Contact is created in Reply
  • Reply
    Prospect replies to an email in Reply Instant
  • Reply
    Email is sent in Reply Instant
  • Reply
    Person opens email in Reply Instant
  • Reply
    Reply is marked with new inbox category in Reply Instant
  • Reply
    Prospect finished the sequence in Reply Instant
  • Reply
    Person opts out in Reply Instant
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2.
  • Customer.io
    Add person to segment in Customer.io
  • Customer.io
    Create or Update Person in Customer.io
  • Customer.io
    Create event in Customer.io
  • Customer.io
    Create anonymous event in Customer.io
  • Reply
    Create a person and push to campaign in Reply
  • Reply
    Create or Update Contact in Reply
  • Reply
    Search contact by email in Reply
  • Reply
    Search contact status in campaign in Reply
  • Reply
    Remove a contact from campaign in Reply
  • Reply
    Mark as finished in Reply
  • Reply
    Mark as replied in Reply

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Ready Workflows Ready Workflows for Customer.io + Reply Integration

Sync customer communication, update person profiles, log engagement events, and trigger follow-up campaigns, all in just one click.

Most popular automationmost-popular-automations
Reply + Customer.io Integration

Create Customer.io person for new Reply contact

There are many reasons why someone might choose to use two different marketing tools. One common reason being - able to reach a wider audience. For example, if one tool is better suited for reaching customers in a certain geographic region, while another is better for reaching customers of a certain age group, using both can help businesses reach their target market more effectively.

Thus, integration of your new Customer.io person and Reply contact can help make sure that your messages are coordinated and that you're taking full advantage of all your channels. It can also help reduce the amount of time you spend managing different tools and platforms.
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Connect more apps to your Customer.io + Reply flow

Send your outreach data to CRMs, calendar bookings, team chat channels, and spreadsheets the moment an activity occurs. Pick a combination and activate it in one click.

Customer.io
Reply
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HubspotHubspot (4)
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SalesforceSalesforce (4)
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PipedrivePipedrive (4)
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CalendlyCalendly (4)
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SlackSlack (4)
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Google SheetsGoogle Sheets (4)
R
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When a contact is created in Reply, create or update the person in Customer.io and create a contact in HubSpot.
New Reply contacts appear in Customer.io and HubSpot instantly, eliminating manual data entry between your outreach and CRM tools.
R
C
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When a prospect replies to an email in Reply, create an event in Customer.io and update the deal stage in HubSpot.
Prospect replies in Reply instantly trigger custom events in Customer.io and update your sales pipeline in HubSpot.
R
C
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When a prospect finishes the sequence in Reply, add the person to a segment in Customer.io and create a follow-up task in HubSpot.
Completed sequences in Reply update Customer.io segments and open HubSpot tasks for your team.
R
C
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Use Claude to evaluate prospect replies in Reply, create an event in Customer.io, and log the summary in HubSpot.
Claude summarizes email replies from Reply, logs engagement in Customer.io, and updates HubSpot notes.

Supported triggers and actions for Customer.io and Reply

Mix and match to build the exact automation you need

Customer.io
Customer.io Triggers & Actions
No trigger is available
Add person to segment in Customer.io
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Create or Update Person in Customer.io
Generates a new invoice
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Create event in Customer.io
Adds a new contact to the contact list
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Create anonymous event in Customer.io
Creates a confidential gathering without disclosing organizer's identity
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Reply
Reply Triggers & Actions
Contact is created in Reply
Triggers the automation when a new contact is created
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Instant
Prospect replies to an email in Reply
Triggers the automation when a prospect replies to an email
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Instant
Email is sent in Reply
Triggers the automation when an email is sent
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Instant
Person opens email in Reply
Triggers the automation when a person opens an email
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Instant
Reply is marked with new inbox category in Reply
Triggers the automation when a reply is marked with a new inbox category
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Instant
Prospect finished the sequence in Reply
Triggers the automation when prospect finishes the sequence
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Instant
Person opts out in Reply
Triggers the automation when a person opts out of marketing communications
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Create a person and push to campaign in Reply
Creates a new person and adds them to a campaign
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Create or Update Contact in Reply
Adds or update contact information
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Search contact by email in Reply
Finds and retrieves contact information using their email address
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Search contact status in campaign in Reply
Searches for a contact's status in a campaign
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Remove a contact from campaign in Reply
Removes a contact from a campaign
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Mark as finished in Reply
Mark a task or item as completed
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Mark as replied in Reply
Mark incoming messages as replied to save time and keep track of conversations
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What can you automate with Customer.io + Reply?

Connect your outreach and behavioral tracking to sync contacts, log engagement events, and update campaigns effortlessly.

What you can automate?
🔄
Sync new contacts instantly across platforms
Automatically create or update person profiles in Customer.io the moment a new contact is created in Reply. Keep your outreach tools and customer data platforms perfectly aligned.
📥
Capture every engagement event and response
Log prospect email replies, sequence completions, and opt-outs as custom events in Customer.io. Maintain a complete behavioral record for every lead.
🔔
Alert your team the moment a prospect replies
Send instant channel notifications to Slack whenever a prospect replies to an outreach email. Enable sales reps to follow up while buyer intent is at its peak.
🔀
Route prospects based on engagement criteria
Take different actions depending on whether a prospect replies, opts out, or finishes a sequence. Ensure appropriate follow-up paths for every outcome.
📝
Keep CRM records updated automatically
Push contact updates, deal stages, and task assignments into HubSpot or Salesforce whenever outreach activity occurs. Eliminate manual data entry entirely.
🚫
Remove contacts from campaigns upon booking
Automatically remove contacts from active Reply sequences when a Calendly meeting is booked. Stop automated emails from reaching confirmed prospects.
📋
Log campaign metrics in spreadsheets
Append new rows to Google Sheets for every contact creation, response, or opt-out event. Build custom reports without manual data export work.
✨
Extend flows with powerful third-party tools
Connect your Customer.io and Reply core workflow to Slack, Google Sheets, HubSpot, or Calendly for multi-step automation pipelines.
And much more...

Who is Customer.io + Reply integration for?

Growth marketers, sales leaders, and customer success teams streamline outreach tracking and unify behavioral data to follow up with leads faster.

Performance marketers
Performance marketers
Sales development reps
Sales development reps
Operations managers
Operations managers
Growth teams
Growth teams
Account executives
Account executives
Customer success leads
Customer success leads
📈
Performance marketers
You're running outbound campaigns across multiple channels, but your tracking sheet only updates when someone manually exports lead lists, so the row counts you're optimising against are always a few hours behind — with this integration, every new contact lands in your reports instantly and your data stays current.
⚡
Sales development reps
You need to act fast when prospects respond to emails, but delayed notifications mean you find out about interested leads hours after they reply — with this integration, every email response triggers instant team alerts and profile updates so you can close deals faster.
📊
Operations managers
You answer to leadership and clients who want to see live campaign progress, but manual data transfers lead to constant reporting gaps — automating both apps means every contact creation and reply event syncs instantly across your dashboards.
🚀
Growth teams
The volume of inbound prospects and outbound sequences is too high for anyone to keep up by hand, leading to missed follow-ups and lost pipeline — automating both apps means every interaction is logged and routed without manual intervention.
🤝
Account executives
You own the closing stage and depend on outbound teams to hand over qualified leads smoothly, but communication silos cause frustrating delays — automating both apps means qualified leads appear in your pipeline the moment they engage.
🗂️
Customer success leads
You need a reliable history of prospect interactions and keep finding frustrating gaps between your outreach and messaging platforms — this integration means every event and contact update is recorded accurately in one place.
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Why choose Integrately to automate Customer.io + Reply

Build and manage your Customer.io + Reply automations with ready-made flows, AI assistance, 24x5 reliable human support, and enterprise-grade security.

1,500+ apps connected
1,500+ apps connected
Connect Customer.io + Reply 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.
How Integrately Works?

How Integrately Works?

1
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Select a trigger from Google Sheets
2
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3
Automation is ready
Setup an action from Trello
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Frequently Asked Questions

How do I connect Customer.io to Reply?
Frequently Asked Questions
You can connect Customer.io to Reply in 1 click using ready workflows on Integrately, or use Integrately AI to build custom multi-step automations with Hubspot, Slack, and 1,500+ other apps.
How can I sync Reply outreach data with Customer.io?
Frequently Asked Questions
Can I connect Customer.io, Reply, and Slack?
Frequently Asked Questions
What is a good Zapier alternative for Customer.io and Reply?
Frequently Asked Questions
How does Customer.io handle updates when a contact is created in Reply?
Frequently Asked Questions
How do I push contacts to campaigns in Reply automatically?
Frequently Asked Questions
Can I build Customer.io and Reply workflows without coding?
Frequently Asked Questions
Is the Customer.io and Reply integration free?
Frequently Asked Questions
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