The Scenario
You are an email marketing manager at a digital agency. It is Thursday afternoon and a new client campaign launches Friday at 8 AM. The client sent over a list of 500 new subscribers — email, first name, and company — in a Google Sheet. They need to be in the right BigMailer brand and assigned to the Newsletter list before the campaign fires.
The slow version of Thursday afternoon:
- Download the sheet as a CSV
- Log into BigMailer, navigate to the client's brand
- Find the contact import flow, upload the file
- Remap the columns because "First Name" in the sheet is "firstname" in BigMailer
- Submit, wait for the import job to process
- Come back to check for failed rows
- Manually fix the ones that failed
- The campaign fires Friday morning with 47 contacts missing because the import timed out.
The fast version is one prompt.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent inside your spreadsheet that reads the contact rows and calls the BigMailer batch API for you, so you do not have to touch a CSV export or a column-mapping UI.
Open the SheetXAI sidebar and type:
Upload every row in this sheet as a BigMailer contact in brand ID 'xyz' — use column A for email, B for first name, C for company — and assign them to the 'Newsletter' list. Write the batch job ID into cell E1 and report how many contacts were successfully queued.
SheetXAI reads the rows, calls the BigMailer batch contact endpoint, writes the batch ID into E1, and tells you how many contacts were queued. If any rows fail validation, it lists them and the reason so you can fix them inline.
What You Get
A confirmed batch import with three things written back into the sheet:
- Batch job ID in E1 — your audit record for the import
- Row count confirmation — how many contacts were queued successfully
- Failure list — any rows BigMailer rejected, with the reason per row
The import runs against the batch endpoint, not the one-at-a-time contact API. Five hundred rows go in as one API call, not 500 sequential calls. You get a batch ID you can reference if BigMailer support ever asks what happened.
If the client sends a corrected file next week with updates to some of these same contacts, give SheetXAI the same shape of prompt but tell it to upsert instead of create, and it handles the logic.
What If the Data Is Not Quite Ready
Real subscriber lists from clients are rarely import-ready. SheetXAI handles cleanup and the import in the same prompt.
When email addresses have inconsistent formatting
Some emails have trailing spaces, some have uppercase domains, some have obvious typos like "gmial.com."
Normalize all email addresses in column A: trim whitespace, lowercase the domain portion, and flag rows where the domain looks like a common typo (gmial, yahooo, hotmial) by writing "CHECK" into column D. Then upload the remaining valid rows to BigMailer brand 'xyz' on the Newsletter list.
When the company column is mostly blank
The client filled in company for their enterprise contacts but left it blank for consumers. You want to import both groups but set the company field differently.
For rows where column C is blank, set the company field to 'Individual' before importing. Then upload all rows to BigMailer brand 'xyz' on the Newsletter list. Write the batch ID into cell E1.
When a subset of rows should go to a different list
The client flagged VIP contacts in column D. They go to a separate BigMailer list.
Split the contacts into two groups: rows where column D is 'VIP' go to the 'VIP Newsletter' list, all other rows go to the 'Newsletter' list. Import both groups into BigMailer brand 'xyz' and write both batch IDs into cells E1 and E2.
When the sheet has duplicates and stale contacts mixed in
The client assembled the list from three sources and there are duplicates plus some known unsubscribes mixed in.
Deduplicate column A by email, keeping the first occurrence of each. Remove any rows where the Status column is 'unsubscribed'. Normalize email formatting. Then upload the cleaned list to BigMailer brand 'xyz' on the Newsletter list and write a summary — total rows, duplicates removed, unsubscribes skipped, contacts imported — into cells E1 through E4.
The pattern: instead of cleaning the sheet in a separate pass and then importing, you ask for both in one prompt. SheetXAI handles the conditional logic inline, so the campaign goes out Friday with the right contacts and you know exactly what happened.
Try It
Get the 7-day free trial of SheetXAI and open any sheet with a contact list, then ask it to import the rows into BigMailer. The BigMailer integration is included in every SheetXAI plan. For more, see how to upsert a CRM export into BigMailer or the BigMailer in Google Sheets overview.