Build a CRM Suppression List in a Excel Using Kickbox

The Scenario

You're a CRM admin at a B2B software company. The sales team ran a win-back campaign six months ago and it went nowhere. The VP of Sales just asked for another push — but first she wants the dormant contact list scrubbed before it goes to the ESP. You've pulled 500 contacts who haven't engaged in 18 months and exported them into an Excel workbook. Column A is email, columns B through D are company, last activity date, and deal stage.

The assignment is clear: flag which addresses are still deliverable and which should be suppressed. But nobody gave you the afternoon to do it.

The bad version:

• Export the workbook as a CSV, upload to Kickbox bulk UI, wait for the run, download results.
• Open the results CSV alongside the original workbook, match 500 rows by email address — they're in different orders — and paste KEEP or REMOVE into column E manually.
• Realize 30 rows are duplicates across two different deal stages, decide which version to keep, then update both worksheets to reflect the decision.

Four decisions, three windows open, two hours gone. That's the process every time.

The Easy Way: One Prompt in SheetXAI

SheetXAI is an AI agent that lives inside your Excel workbook. It reads the contact data, calls Kickbox through its built-in integration, and writes KEEP or REMOVE labels directly back to the workbook in one pass — no CSV round-trip, no manual row matching.

For each email in column A verify it with Kickbox and mark column B as KEEP if deliverable or REMOVE if undeliverable or disposable, then sort the workbook so all REMOVE rows are grouped at the bottom

What You Get

• Column B receives KEEP for any address Kickbox returns as deliverable, REMOVE for undeliverable or disposable results.
• The workbook is sorted so all REMOVE rows are grouped at the bottom — ready to copy into your ESP's suppression list.
• Your original columns C and D (company and last activity date) are preserved.
• Rows where Kickbox returns an API error are marked ERROR in column B so you know which addresses need a second pass.

What If the Data Is Not Quite Ready

The contact list has duplicates — same email address at different deal stages

Deduplicate column A by email address keeping the row with the most recent date in column C, verify each unique email with Kickbox, and mark column B as KEEP or REMOVE

The workbook also needs the raw Kickbox result code for the CRM import spec, not just KEEP/REMOVE

Verify each email in column A with Kickbox, write KEEP or REMOVE in column B based on deliverability, and add the raw Kickbox result code in column C for the CRM system

The dormant list is split across two worksheets — 'Dormant_US' and 'Dormant_EU'

Combine emails from column A of 'Dormant_US' and column A of 'Dormant_EU', deduplicate, verify each with Kickbox, write KEEP or REMOVE back to column B on the appropriate worksheet, and add a summary count by region

Full pre-campaign pass: deduplicate, verify, label, and produce a suppression-ready export sorted by status

Deduplicate column A keeping the most recent row per email, verify each with Kickbox, mark column B KEEP or REMOVE, add the Kickbox result code in column C and the sendex score in column D, then sort the workbook: REMOVE rows first grouped by result code, then KEEP rows sorted by sendex score descending

That's the full suppression-ready output with enough signal for whoever manages your ESP to make import decisions without asking follow-up questions.

Try It

Get the 7-day free trial of SheetXAI and open the Excel workbook where your dormant CRM contacts live, then ask it to verify each email with Kickbox and mark the rows KEEP or REMOVE. From there, see the bulk verification spoke or the Kickbox hub for the full method overview.