The Scenario
You just got handed a Google Sheet with 500 email addresses your sales team collected at a trade show three weeks ago. Some were typed in by hand on a phone. Some came from business cards photographed and auto-parsed. You need to load them into the CRM by end of day, and your RevOps manager specifically said to not import addresses that will immediately hard-bounce.
Syntax validation isn't enough here. Plenty of these addresses look fine — right format, real domain — and still aren't deliverable. Someone's IT team shut down an account. A domain hasn't had active mail exchange records in months. The only way to know is to check at the SMTP level.
The bad version:
- Find an SMTP verification service with a CSV upload option, export the sheet, upload it, wait for the results, download the results CSV
- Open both files side by side, match rows by email string, paste the deliverability column across
- Discover that 12 addresses appear in the results file with slightly different formatting than the source and can't be matched automatically
Your RevOps manager is waiting for the clean import file. The time you're spending on this match problem is time the reps aren't spending on follow-up.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent that sits inside your Google Sheet. It reads column A and, through its built-in Neutrino integration, runs SMTP-level verification on every address and writes the deliverability result and status directly into the columns you name.
For each email in column A, use Neutrino email verify with SMTP check and write the deliverability result in column B and the status reason in column C. Mark any address that cannot be verified as UNKNOWN in column B.
What You Get
- Column B: the deliverability verdict — deliverable, undeliverable, or unknown — for every row
- Column C: the status reason the SMTP check returned — mailbox not found, domain no MX, etc.
- No file exports, no cross-referencing — results sit in the same sheet, same rows, immediately filterable
- UNKNOWN rows are explicitly surfaced so you can decide whether to hold them or follow up directly
What If the Data Is Not Quite Ready
Several addresses have typos in the domain (gmial.com, yahooo.com)
For each email in column A, first check whether the domain looks like a common typo of a major provider. If it does, correct it and write the corrected email in column B. Then run Neutrino SMTP verification on the corrected address and write the result in column C and status in column D.
You want to separate out role-based addresses (info@, support@) before verification
For each email in column A, flag role-based addresses (those beginning with info, support, sales, admin, help, or contact) with ROLE in column B. For all remaining addresses, run Neutrino SMTP verification and write the deliverability result in column C and status in column D.
The sheet has a "source" column in column B and you want to see bounce rate by source
Run Neutrino SMTP verification on all emails in column A. Write the deliverability result in column C. Then produce a summary table below the data showing, for each unique source in column B, the count of deliverable and undeliverable addresses.
Full cleanup and verification in one pass
Trim whitespace from all emails in column A, correct obvious domain typos, remove duplicate addresses, run Neutrino SMTP verification on each unique email, write the verified result in column C and the reason in column D, and flag any address appearing more than once in the original data with DUPLICATE in column E.
One prompt handles what would otherwise be four separate operations.
Try It
Get the 7-day free trial of SheetXAI and open your trade show contact sheet, then ask SheetXAI to run Neutrino SMTP verification on the email column before you load the list into your CRM. See also the bulk email validation spoke if you want syntax and domain checks as a first pass before SMTP verification.