The Scenario
You are an operations manager. It is January 6th. Your team uses Gmail labels to keep shared inboxes organized, and you just realized that 312 emails from the past year with "invoice" in the subject have never been labeled. They are sitting unlabeled in the shared inbox.
You need to apply the Invoices-2025 label to all of them before the year-end close meeting at 2 PM.
The bad version:
- You open Gmail and run the search: "subject:invoice before:2026/01/01 after:2024/12/31"
- Gmail returns 50 results per page, so you select all on page one
- You apply the label from the dropdown
- You realize "select all" only selected the 50 visible, not all 312
- You click through six pages, selecting and labeling each batch
- You miss a page and have to start over from the search
- You walk into the 2 PM meeting having labeled 240 of 312 emails.
The fast version is one prompt.
The Easy Way: One Prompt in SheetXAI
SheetXAI is an AI agent inside your spreadsheet that talks to Gmail's API directly, so batch label operations do not require clicking through pages of search results.
Open the SheetXAI sidebar and type:
Find all Gmail emails with "invoice" in the subject received in 2025 and apply the label "Invoices-2025" to every one of them. Tell me how many emails were labeled when done.
SheetXAI runs the search, calls Gmail's batch modify API, applies the label to every matching message in one operation, and reports the count back. You did not click through a single page of search results.
What You Get
Every matching email labeled, confirmed with a count:
- Label applied —
Invoices-2025on all 312 messages - Count confirmed — SheetXAI tells you how many were labeled
- No page-by-page clicking — the Gmail API batch operation handles all matches at once
If the label does not exist yet, SheetXAI creates it. You do not have to pre-create it in Gmail settings before running the prompt.
You can also ask SheetXAI to write the labeled email subjects into a sheet column for a record of what was tagged.
What If the Data Is Not Quite Ready
Inbox labeling operations are usually more nuanced than a single flat search. SheetXAI handles the logic in the prompt.
When you want to apply a label only to emails from specific senders
Not all invoice emails are worth tagging. You only want the ones from your approved vendor list.
Find all Gmail emails with "invoice" in the subject from 2025 where the sender is '@vendor-a.com' or '@vendor-b.com'. Apply the label "Invoices-2025" to all of them and report the count.
When you need to apply different labels based on the email content
Some invoices are for software, some for hardware. You want them separated.
Find all Gmail emails with "invoice" in the subject from 2025. Apply the label "Invoices-Software-2025" to emails where the subject also contains "software" or "SaaS". Apply the label "Invoices-Hardware-2025" to emails where the subject contains "hardware" or "equipment". Apply "Invoices-Other-2025" to the rest. Report the count per label.
When you want a sheet record before applying anything
You want to see the list before committing to the bulk label.
Find all Gmail emails with "invoice" in the subject from 2025. Write sender, subject, and date into columns A, B, and C of this sheet — do not apply any label yet. I will review the list and then ask you to apply the label.
When you need to label and then archive in one pass
The inbox is cluttered. You want the emails labeled and moved out of the main view.
Find all Gmail emails with "invoice" in the subject from 2025. Apply the label "Invoices-2025" to all of them and then archive them (remove from Inbox). Report the count of emails labeled and archived.
The pattern: the Gmail API has no concept of "page through results and click each batch." SheetXAI uses the batch modify endpoint directly, so scale is not a constraint.
Try It
Get the 7-day free trial of SheetXAI and open any sheet, then ask it to apply a Gmail label to any search query you define. The Gmail integration is included in every SheetXAI plan. For related workflows, see how to search Gmail and pull results into a sheet or the Gmail in Google Sheets overview.