Need to automatically add tag to customers who enter email in Shopify Forms

Topic summary

Main issue: Automatically add a customer tag when a visitor submits their email via Shopify Forms, and ideally via third‑party popup form apps as well.

Latest guidance (Shopify Forms): Set up an automation that uses “Metaobject entry created” as the trigger and select the specific form. This provides a way to apply a tag based on submissions. (Metaobject = a structured data object in Shopify; trigger = the event that starts an automation.)

Third‑party popup forms: No confirmed method provided. The recommendation is to contact the app’s developer to see if their app exposes an event or integration to support auto‑tagging.

Outcome/status: Partial solution identified for Shopify Forms; approach for third‑party apps remains unresolved and depends on the app’s capabilities. No final decision beyond advising to ask the app owner for 3p support.

Summarized with AI on December 14. AI used: gpt-5.

How can I assign a tag [automatically] for website visitors who enter email in a form? Specifically Shopify Forms but I would like to do this is an 3rd party pop up form app too

For Shopify Forms - you can use Metaobject entry created as the trigger and choose the form.

Not sure about 3p forms - you need to ask the app owner