Miko AI does not send automation emails itself in the standard setup. It fires a Miko AI trigger in Shopify Flow, and the email action in your Flow workflow does the sending. So a missing email usually means the workflow is not turned on, or the trigger has not fired for that customer yet, rather than a fault in the email. The app’s own direct send is skipped silently when no email provider is configured for your store, which also reads as "the automation did not fire".
Check these in order
Is the automation active in the app?
In Automations, the automation should show an Active badge. If it does not, finish the setup and click Mark as active.
Is the Flow workflow turned on?
In Shopify Flow, open the workflow that uses the Miko AI trigger and check it is on. A workflow that was built but never turned on does nothing.
Has the trigger fired?
Miko AI checks its triggers each time a paid order comes in, so First Purchase, Became VIP and High Value fire at that order. At-risk, lapsed and one-time buyer tags are written by a full sync, which does not fire the Miko AI triggers. For those, build the workflow on Flow’s Customer tags added trigger instead. Check the workflow’s run history in Flow.
Can the customer receive the email?
Check the customer has an email address in Shopify, and that they are subscribed if your action sends a marketing email.
Was the customer emailed recently?
For the app’s direct sends, the same automation does not email the same customer twice within 60 days.
How to fix it
Turn on the Flow workflow, mark the automation as active in the app, and for time-based groups such as at-risk or lapsed customers, use the Customer tags added trigger with the matching miko- tag. See Sending campaigns with your email platform for the full setup.
If it still is not working
Contact support with your store domain, the automation name and the email of a customer who should have received it.
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