The Scenario
You're a deliverability consultant with 80 sending domains across a client portfolio — different brands, different ESPs, different histories. A client forwarded a bounce-rate alert this morning. You have no idea which of their domains are currently on a blacklist, and you need a full picture before the call at 2 PM.
The bad version:
- Open MX Toolbox, go to Blacklist Check, paste the first domain, wait, scan the results, note which blacklists flagged it, switch to your workbook, type the findings into the row.
- Do that 79 more times, increasingly unsure whether you misread row 34 because two domains had similar names.
- Arrive at the call with a half-complete table and hedge every answer because you're not confident in the data.
The call is at 2 PM regardless of how far you got through the list. Showing up with 40 rows audited and 40 blank is not a deliverability audit — it's a work-in-progress that looks like a gap.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent that lives inside your Excel workbook. It reads your domain list and through its built-in MX Toolbox integration runs a blacklist check against every domain in one pass, writing the results back to the workbook.
Run a blacklist check via MXToolbox on every domain in column A and write the total blacklists checked, number of listings found, and the names of any blacklists that flagged the domain into columns B, C, and D
What You Get
- Column B: total number of blacklists checked per domain (so you know the denominator)
- Column C: count of blacklists that flagged the domain — 0 means clean
- Column D: names of any blacklists that returned a listing, comma-separated — blank if clean
- CLEAN rows are immediately visible; flagged rows stand out by count
What If the Data Is Not Quite Ready
Workbook has IP addresses mixed with domain names
For every row in column A, check whether the value is an IP address or a domain, run the appropriate MXToolbox blacklist lookup for each, and write CLEAN or LISTED into column B and any offending blacklist names into column C
Need to flag severity, not just presence
Run a MXToolbox blacklist check for each domain in column A, write the listing count in column B and the blacklist names in column C, then add a column D that labels each domain as CRITICAL if listed on more than 2 blacklists, FLAGGED if listed on 1 or 2, and CLEAN otherwise
Domains are in multiple worksheets — Clients and Partners
Run a MXToolbox blacklist check for all domains in column A of both the Clients worksheet and the Partners worksheet, write results into the adjacent columns on each respective worksheet, and create a Summary worksheet that lists only the domains with at least one listing
Full triage sweep before the client call
Check all domains in column A for duplicates first, then run MXToolbox blacklist checks on each unique domain, populate columns B through D with results, and produce a PASS/FAIL column E — FAIL if any blacklist listing was found, PASS otherwise
One prompt, full triage. You walk into the 2 PM call with a complete report instead of 40 blanks.
Try It
Get the 7-day free trial of SheetXAI and open your sender domain tracker in Excel, then ask it to run a blacklist check across column A. Related: Bulk Email Deliverability Audit or the MX Toolbox overview for Excel.