Shopify Flow can pass custom values—such as customer tiers, loyalty points, or product attributes—into Seguno: Email Marketing. These values let you personalize Flow-triggered emails with dynamic fields. Use this feature when other Shopify or third-party apps provide data to Flow.
How Flow variables work
A Flow variable contains information provided by the Flow trigger or your Shopify data (customer, product, order, or store details).
In Seguno emails, each variable is referenced as {{flow.key}}.
To use a Flow variable, Shopify Flow must define:
Key — The label you create.
Value — The attribute from the Flow trigger or Shopify data that replaces the key when the email sends.
Add custom Flow variables for your automation
Follow these steps to set up custom data in your Shopify Flow workflow:
Open Shopify Flow.
Select the workflow you want to update.
In the workflow, add the Seguno action: Send marketing email (or Send abandonment email or Send back in stock notification email).
In Custom personalization data, define your variables using key=value format.
Click Add variable to view available attributes from your Flow trigger and Shopify data.
Add one line per variable.
Example:
oldTierName={{oldTierName}}
newTierName={{newTierName}}After saving, each variable becomes available in Seguno as:
{{flow.oldTierName}} and {{flow.newTierName}}
Insert Flow variables into a Seguno email
After defining your keys in Flow:
Open your email in Seguno Automations or directly through Shopify Flow.
Add Flow variables inside any text field, subject line, or preview text using:
{{flow.key}}
(Optional) Provide a fallback value using the default value:
{{flow.newTierName | default: 'your new tier'}}Save your email and return to Shopify Flow.
Activate the workflow.
Flow variables are only available for the email configured with that {{flow.key}}.
Notes and common limitations
Note: Available variables depend on what the Flow trigger provides and whether your apps store data in Customer, Product, or Order metafields.
Warning: If the workflow was created before Nov 21, 2025, delete and re-add the Seguno action to enable custom variable support.
FAQs:
What variables can I add to my Seguno emails?
You can add any variable provided by the Flow trigger or stored in Shopify metafields. This includes customer, product, order, store, or third-party app attributes.
What Seguno emails support Flow variables?
Flow variables are supported in Send marketing email, Send abandonment email, and Send back in stock notification email actions in Shopify Flow.
Can I use Flow variables for loyalty programs?
Yes. If your loyalty app provides values through Flow triggers or Customer metafields, those values can be inserted into Flow-automated Seguno emails.
Why send app data through Seguno emails?
Using Flow variables lets you personalize messages and track all performance inside Seguno: Email Marketing for consistent reporting.
Why can’t I add custom variables to my existing Flow?
Older workflows may not support this feature. Replace the Seguno action in Shopify Flow to enable custom personalization data.