The Scenario
You're on the growth team at a SaaS startup. Someone pulls up the free-trial sign-up data from the last 60 days — 200 unique domains, a mix of company emails and what looks like a lot of throwaway addresses. The sales team is about to start their outreach sequence on these leads.
You've seen this movie before. Half the demos your team books with free-trial users go nowhere because the email belonged to a disposable provider and the "lead" never came back after the trial expired. Your VP of Sales asks you every Monday why pipeline quality is slipping.
The bad version:
- Look up each domain manually in a disposable email checker, copy the result into a notes column
- After 30 domains you start recognizing some — mailnull.com, guerrillamail.com — but you're not confident about the other 170
- Finish the check three days later, by which point the sales team has already sent half the sequence and is asking why so many contacts aren't responding
Two hundred domains is not a lot. But it's enough that doing it by hand is a full afternoon, and that afternoon lands squarely in the middle of everything else you're supposed to be doing before end of quarter.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent that lives inside your Google Sheet. It reads your domain column, runs each entry through EmailListVerify's disposable-domain endpoint, and writes the result back to the sheet — before the sales team opens their outreach tool.
For each domain in column A of my "Trial Sign-ups" tab, check whether it is a disposable email provider using EmailListVerify and write true or false to column B
What You Get
- Column B:
truefor disposable providers,falsefor legitimate domains - Every row covered in one pass — no missed entries from fatigue or distraction
- Blank domain cells are flagged separately rather than sent as empty strings to the API
- Results are ready for the sales team to filter on before sequences launch
What If the Data Is Not Quite Ready
Sign-ups came in with full email addresses, not just domains
Extract the domain from each email address in column A of the "Trial Sign-ups" tab, check each domain against EmailListVerify's disposable-domain endpoint, and write the domain to column B and the disposable status (true/false) to column C
You want a cleaner label than true/false for the sales team
Check each domain in column A of the "Trial Sign-ups" tab against EmailListVerify's disposable-domain endpoint and write "disposable" or "legitimate" to column B, then filter the tab to show only legitimate rows so the sales team has a clean working list
Some domains appear multiple times across different sign-ups
Deduplicate the domains in column A of the "Trial Sign-ups" tab, check each unique domain against EmailListVerify's disposable-domain endpoint, write the status to column B for the first occurrence of each domain, then propagate the same status to all duplicate rows
Score, flag, and route in one pass
For each email in column A of the "Trial Sign-ups" tab, extract the domain, check it against EmailListVerify's disposable-domain endpoint, write the status to column B, then add a "Routing" label in column C — "Sales Queue" if legitimate, "Auto-Nurture" if disposable — so the team can filter without any manual review
Ask for the domain check and the routing logic together — SheetXAI applies both in a single pass.
Try It
Get the 7-day free trial of SheetXAI and open your sign-up sheet, then ask SheetXAI to check every domain against EmailListVerify's disposable-provider database and label each row before your sales team starts their sequence. See also: checking domains against spam blacklists and the EmailListVerify hub.