The Scenario
The loyalty program just upgraded 1,000 customers to gold tier. The email marketer has their customer IDs in column A of a Google Sheet. She needs a 'gold-member' tag added to every one of them in Shopify — preserving any existing tags they already have — before the next email segment runs on Friday.
No third-party loyalty app. No Shopify Plus flow. Just tags, applied correctly to 1,000 customer records.
The bad version:
- Open the first customer profile in Shopify, click to edit tags, type 'gold-member', make sure the existing tags are still there, save.
- Open the next customer profile.
- 1,000 profiles. Each one a navigation, a check, a tag entry, and a save.
Friday's email segment query pulls on the 'gold-member' tag. If the tags aren't there, the wrong customers get the email. That's not recoverable.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent that lives inside your Google Sheet. It reads the customer IDs, fetches each customer's existing tags, appends the new tag, and updates the record in Shopify — without overwriting anything that was already there.
For each customer ID in column A of my Loyalty Upgrade sheet, update the Shopify customer to add the tag 'gold-member' — write 'tagged' in column B for each success
What You Get
- The 'gold-member' tag added to each customer in Shopify, with existing tags preserved.
- Column B updated with "tagged" for each success, or an error message for any customer ID that couldn't be resolved.
- Friday's email segment pulls correctly because the tags are in place before the query runs.
What If the Data Is Not Quite Ready
Some customers already have the 'gold-member' tag — skip them to avoid re-processing
For each customer ID in column A of my Loyalty Upgrade sheet where column B is blank, check if they already have the 'gold-member' tag — add it if not — write 'tagged' or 'already tagged' into column B
Tags come from column B in the sheet, not a hardcoded value — each customer gets a different tag
For each customer ID in column A of my Loyalty Upgrade sheet, update the Shopify customer to add the tag in column B — preserve existing tags — write 'tagged' in column C for each success
Customer records use email addresses in the sheet, not customer IDs
For each row in my Loyalty Upgrade sheet, look up the Shopify customer by the email in column A — add the tag 'gold-member' preserving existing tags — write 'tagged' or 'not found' into column B
Look up by email, skip already-tagged, add tier tag, and write confirmation with timestamp
For each row in my Loyalty Upgrade sheet where column B is blank, look up the Shopify customer by email in column A — if the 'gold-member' tag is not already present, add it while preserving existing tags — write 'tagged' and the timestamp into column B, or 'already tagged' if it was present
Running the tag check alongside the update means you can re-run the same prompt after adding more customers to the list without double-tagging anyone.
Try It
Get the 7-day free trial of SheetXAI and open the loyalty upgrade sheet before Friday's email segment runs, then ask SheetXAI to tag all 1,000 gold-tier customers in one operation. The next tier upgrade will use the same prompt with a new list. Also worth reading: how to look up customer order history for churn analysis, or the hub overview for all Shopify workflows.