The Scenario
You manage the contact database for a SaaS company. Six months of signups are sitting in column B of your Sheet — just under 2,000 addresses collected through three different lead forms, a partner import, and a product waitlist. Before the growth team triggers the welcome sequence next week, someone on the deliverability side asked you to validate the whole list.
The bad version:
- Export column B to CSV, upload it to a third-party validator, wait for a batch job to finish, download results
- Cross-reference the results file against the original Sheet by matching email strings manually, since the validator numbered rows differently than your export
- Paste the valid/invalid column back into the Sheet, recheck the 47 rows where the result came back as "unknown," decide manually whether to include them
The welcome sequence fires in five days. Running that gauntlet twice — once now and once after the team adds the final 200 signups on Friday — is not how you intended to spend this week.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent that lives inside your Google Sheet. It reads the data and talks to UniOne for you — no CSV export, no third-party validator tab, no manual row matching. Open the SheetXAI sidebar and ask.
Validate all email addresses in column B of the Contacts sheet using UniOne batch validation and write the result (valid or invalid) into column C
What You Get
- Column C fills with the deliverability status for each row — valid, invalid, or unknown
- Rows with hard-bounce indicators from previous UniOne sends are flagged invalid regardless of syntax
- Any address UniOne cannot resolve within the batch is marked unknown in column C so you can review manually
- The Sheet stays in place — no export, no re-import, no row-number mismatch to sort out
What If the Data Is Not Quite Ready
Some addresses have leading or trailing spaces from the form import
Clean whitespace from all cells in column B, then validate with UniOne and write results to column C
The list includes duplicates across multiple tabs
Deduplicate emails across the Contacts tab and the Partner Import tab, then validate the merged unique list with UniOne and write results into column D of the Contacts tab
You only want to validate addresses not already validated last month
Validate only the emails in column B where column C is blank, using UniOne batch validation, and write the result into column C
The team wants a cleanup, validation, and segmentation pass in one shot
Remove duplicates from column B, validate all remaining addresses with UniOne, mark invalid ones red, and move valid addresses to the Approved tab
One prompt. UniOne handles the validation; SheetXAI handles the cleanup and the routing.
Try It
Get the 7-day free trial of SheetXAI and open the Sheet holding your contact list, then ask it to validate column B with UniOne. Also useful: exporting suppression data in the export-suppression-list article, or see the full UniOne hub for all integration options.