Customer.io
Customer.io email and tracking events into workflows
Customer.io is the messaging platform purpose-built for product-led companies, the lifecycle messaging tool you reach for when triggered emails based on real user behaviour matter more than newsletter campaigns. Four triggers cover the engagement surface: Customer Subscribed (opt-in moment), Email Delivered, Email Opened, Email Link Clicked. Four actions cover the operational side: Identify Person (the upsert primitive in Customer.io's data model), Track Event (custom event for triggering downstream Customer.io campaigns), Send Transactional Email (one-off transactional sends outside the campaign system), Delete Person. The integration uses Customer.io API credentials (Site ID + API Key for the Track API, plus an App API Key for behavioural data). The integration shines when paired with Customer.io's behavioural-trigger campaigns: a workflow Track Event fires a Customer.io campaign that doesn't fire from Customer.io's own SDK, useful when the event source is server-side or comes from another SaaS rather than your app.
Workflows start when Customer.io does.
4 real-time triggers, each backed by a webhook subscription. Events arrive within seconds and you don't have to set up polling.
Fires when a customer subscribes to a Customer.io segment or list. The base hook for "they joined → start the welcome journey" or "qualified → add to BDR's outreach queue" cross-app workflows.
Fires when the recipient mail server accepts the message. Useful for verifying "did the transactional email actually deliver?" workflows.
Fires when a recipient clicks a tracked link in a Customer.io email. Payload includes the link URL and recipient. High-signal behavioural hook — branch on URL to route engagement to the right downstream automation.
Fires the first time a recipient opens an email. Useful for engagement-based scoring or for "warm lead — open detected, fire follow-up sequence" cross-app patterns.
Do anything Customer.io can do, from a workflow.
Every action accepts dynamic inputs from upstream nodes, whether that's an AI output, a form field, or a search result.
| Action | What it does |
|---|---|
| Delete Person | Hard-deletes the person and history. Irreversible — used for GDPR right-to-erasure compliance flows. For soft-removal use suppression list or unsubscribe. |
| Identify Person | Upserts person-level attributes (plan, country, signup_date, lifetime_value). The state update that drives segmentation and journey targeting. For "external state change → reflect in CIO for accurate audience filtering" sync. |
| Send Transactional Email | Fires a transactional template (designed in Customer.io UI) at a specific recipient with merge data. For "password reset, order confirmation, receipt" workflows where the email content is reviewed in CIO but the trigger is external. |
| Track Custom Event | Pushes a behavioural event into Customer.io's event store. Journeys and campaigns can trigger on these. The standard hook for "server-side action happened → fire CIO event to start the matching journey". |
Pre-built Customer.io workflows.
Clone any recipe and customize it in one click. Every recipe is fully editable.
Three things worth knowing.
Tiny Command counts a run the moment a trigger fires. Filtering early means only matching events spend your usage budget.
Connect Customer.io once and every workflow on your account can use its triggers and actions. You don't have to re-auth per workflow.
Every Customer.io field shows up in the visual picker for downstream nodes. The raw payload is there for power users, optional for everyone else.
Questions about the Customer.io integration.
If we missed yours, ping support. We usually reply within an hour.
How do I connect Customer.io to Tiny Command?
What Customer.io triggers does Tiny Command support?
What Customer.io actions can I run from a workflow?
Is the Customer.io integration real-time?
Do I need to write code to use Customer.io with Tiny Command?
How much does the Customer.io integration cost?
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Do more with Customer.io.
Wire it to Slack, Notion, HubSpot, Stripe, or any of the other 438 apps in our catalog. Setup takes roughly two minutes. Free to try, no credit card.
