The Scenario
Your CRM export landed in a Google Sheet at 8 AM — 2,000 contacts, every email address collected over the past year from webinars, form fills, and manual entry. The campaign is scheduled to go out Thursday. Your deliverability consultant just flagged that your last send had a 4.2% bounce rate, and your ESP is threatening to suspend the account if it happens again.
You open the sheet and stare at column A.
The bad version:
- Export the list to CSV, paste batches of 50 into the Neutrino web dashboard one at a time, copy results back into a staging tab
- Cross-reference the staging results against the original rows by hand, matching on email string because the row order drifted
- Build a VLOOKUP to pull the validation column across, discover three emails have trailing spaces that break the match, fix them, re-run
No one in your organization hired you to babysit a validation workflow for three hours before every campaign send. The bounce rate problem doesn't get solved while you're doing this. It gets solved after — if the list makes it to Thursday clean.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent that lives inside your Google Sheet. It reads the sheet, understands the data in column A, and through its built-in Neutrino integration it runs email validation on every row and writes the results back into the columns you specify. One prompt.
For each email in column A, use Neutrino to validate it and put the result (valid or invalid) in column B and any issue found (syntax, domain, or disposable) in column C. Leave column B and C blank only if the validation returns no issue.
What You Get
- Column B: "valid" or "invalid" for every row — no blanks, no ambiguity
- Column C: the specific failure type — "syntax", "domain", or "disposable" — populated only where an issue exists
- Any row Neutrino cannot process surfaces immediately so you can decide how to handle it before the campaign goes out
- The original column A is untouched — your source data stays intact
What If the Data Is Not Quite Ready
Some emails have leading or trailing whitespace
Trim all values in column A first, then validate each one with Neutrino and write the result to column B and the issue type to column C.
Some rows have two emails in column A separated by a semicolon
For each row in column A, if the cell contains a semicolon, split it into two separate emails, validate both with Neutrino, and write the worse result to column B — flagging the row with "SPLIT" in column D so I can review the pair.
The list has a domain column in column B and you want to cross-check it
For each email in column A, validate it with Neutrino. Also check whether the domain portion of the email matches the value in column B. Write the validation result in column C and flag any mismatch between email domain and column B with "MISMATCH" in column D.
Clean, validate, and summarize in one shot
Trim whitespace from all emails in column A, run Neutrino validation on each, write valid or invalid in column B and the issue type in column C, then add a summary row below the data showing the total count of valid, invalid, syntax-error, domain-error, and disposable addresses found.
Each of these is one prompt. The cleanup and the API call happen in the same instruction.
Try It
Get the 7-day free trial of SheetXAI and open your contact sheet, then ask SheetXAI to validate column A with Neutrino before your next send. Then check out the SMTP deliverability verification spoke if you want to go one level deeper than syntax and domain checks.