The Scenario
Every Monday at 9 AM, a new-user export lands in your Google Sheet. Five hundred rows this week. Email in column A, full name in column B, external ID from your auth system in column C. Before the first support ticket comes in from any of these users, every one of them needs to exist as a customer record in Plain.
You have seen what happens when a ticket arrives from someone Plain does not recognize. The agent scrambles to find context. The customer repeats themselves. The QBR slide about first-response quality gets awkward.
The bad version:
- Open Plain, navigate to customer management, click New Customer, type in the email, paste the name, enter the external ID.
- Go back to the sheet. Find row two. Start over.
- At row 15, realize you have been entering the external ID into the name field for the last four records because the column order in the sheet does not match the field order in Plain's form.
500 customers. You are not doing this by hand. More importantly, this happens every single Monday and the idea of blocking out Monday mornings for data entry is not a career trajectory anyone signed up for.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent that lives inside your Google Sheet. It reads every row in your new-user export, connects to Plain through its built-in integration, and upserts each customer — handling the case where some users from previous weeks already exist — then writes Plain's returned customer ID back to your sheet.
For every row in the New Users sheet, upsert a customer in Plain using email (column A), full name (column B), and external ID (column C) — write the Plain customer ID to column D
What You Get
- Column D filled with the Plain customer ID for every successfully upserted record
- Existing customers (from previous Monday runs) are updated rather than duplicated
- Rows that fail validation show the error message in column D instead of silently skipping
- 500 rows processed without a single manual click
What If the Data Is Not Quite Ready
Some rows have blank name fields and should still be synced with just the email and external ID
Upsert all rows in the New Users sheet into Plain using email (column A) as the unique identifier — if column B has a name, include it; if column B is blank, upsert with email and external ID (column C) only — write the Plain customer ID to column D
Names are formatted as LAST, FIRST and need to be flipped
For every row in this sheet, reformat the name in column B from LAST, FIRST order to FIRST LAST order, then upsert the customer in Plain using email (column A), reformatted full name, and external ID (column C) — write the returned customer ID to column D
You want to skip rows where a customer ID is already present in column D
Upsert all rows in the New Users sheet where column D is empty — use email (column A), full name (column B), and external ID (column C) — write the returned Plain customer ID to column D, leaving already-populated rows untouched
Strip malformed emails, normalize external IDs, upsert the clean records, and log a count of skipped rows
Read all 500 rows from the New Users sheet — skip any row where column A does not contain an at sign, trim whitespace from column C, upsert the remaining rows as Plain customers using email (A), name (B), and external ID (C) — write the Plain customer ID to column D and in cell F1 write how many rows were skipped
Combining the cleanup and the sync in one prompt means Monday morning is four minutes, not four hours.
Try It
Get the 7-day free trial of SheetXAI and open your weekly new-user export, then ask it to push those records into Plain before the first ticket lands. You can also bulk-assign those customers to the right Plain groups in the same session or audit the full customer list after the sync.