Most email enrichment tools force you to switch between platforms. You export your leads to a CSV, upload it to the tool, wait for results, download the file, then paste everything back into your spreadsheet. That is four extra steps for every list you build.
The Scalelist Google Sheets add-on removes all of that. You enrich emails without ever leaving your spreadsheet. In this guide, I show you the exact process that returned 43 valid emails from 49 leads in one click.
What Is an Email Enrichment Tool?
An email enrichment tool finds and verifies business email addresses using contact data you already have. You provide a name and company. The tool returns a verified email address.
The best email enrichment tools verify the email at the same time they find it. This tells you whether the address is deliverable before you send anything.
Scalelist’s Google Sheets add-on is an email enrichment tool that works inside your existing spreadsheet. You do not need a separate platform. You do not need to export or import files. You run the enrichment from inside Google Sheets with one click.
What Data Do You Need Before You Start?
To use the Scalelist Google Sheets add-on, your spreadsheet needs at least these columns:
- First name
- Last name (even just the first letter works)
- Company name OR company website
You do not need both company and website. Either one is enough. You also need a Scalelist account. New accounts receive free credits to get started at scalelist.com.
How to Set Up the Scalelist Google Sheets Add-On
Step 1: Install the Add-On
Inside Google Sheets, go to Extensions > Add-ons > Get add-ons. Search for “Find Emails in Sheets by Scalelist.” Click install. Grant the permissions when prompted.
Step 2: Get Your API Key
Go to scalelist.com and log into your account. In the left navigation panel, click API. Click the blue New Key button. Copy the key that appears.
An API key is the connector between your Scalelist account and Google Sheets. Treat it like a password and do not share it.
Step 3: Connect Your Account
Back in Google Sheets, go to Extensions and open the Scalelist add-on. A panel appears on the right side of your screen. Paste your API key and click Save. Your Scalelist account is now connected to your spreadsheet.
Step 4: Map Your Columns
The add-on asks you to confirm which column contains each piece of data:
- First name: Column A
- Last name: Column B
- Company: Column C
- Company website: Column D
If your headers are in row 1, check the box for “My table has headers.”

Step 5: Click Search Emails and Watch Results Appear
Click Search Emails. The add-on starts processing your list immediately. Results populate in your spreadsheet in real time. You do not need to navigate away from Google Sheets.
For a list of 49 leads, the entire process takes a few minutes. You can watch it happen row by row as emails appear on the left side of your screen.
How to Read Your Results: Valid, Risky, Not Found
When the search finishes, each row shows one of three statuses:
Valid: The email passed SMTP verification. It is safe to use for outreach. This is the highest confidence result.
Risky: An email address was found, but it could not be fully verified. It may or may not deliver. You decide whether to include it in your campaign.
Not Found: No email address could be located for this contact. No credits are charged for this result.
Real Results from This Demonstration
From 49 leads:
- 43 valid emails (88% success rate)
- 0 risky emails
- 6 not found (no charge for these)

How the Pricing Works
Scalelist charges one credit per email found. Email verification is included in that credit at no extra cost.
If no email is found, you are not charged. You only pay for results.
For this demonstration of 49 leads where 43 emails were found: 43 credits total. The 6 contacts that returned nothing cost zero credits.
Why This Beats the Traditional Enrichment Workflow
Most email enrichment workflows look like this:
- Export leads to CSV
- Upload CSV to the enrichment tool
- Wait for processing
- Download the enriched CSV
- Paste results back into your original spreadsheet
That is five steps. Every time. For every list.
The Scalelist Google Sheets add-on compresses this to one step. You click Search Emails. Results appear in your sheet. Done.
No exports. No imports. No tab switching. No reformatting. For sales teams that build and enrich lists weekly, this time saving adds up fast.

Frequently Asked Questions
What columns do I need to use the add-on?
You need first name, last name, and either company name or company website. Last names do not need to be complete. Even just the first letter of a last name is enough for the tool to run a search.
What is the difference between a valid and risky email?
A valid email passed SMTP verification and is confirmed safe to use. A risky email was found but could not be fully verified. It may still deliver, but there is no confirmation. You decide whether the risk fits your campaign tolerance.
How much does it cost?
One credit per email found. If no email is found, there is no charge. Email verification is included in the credit cost with no additional fee.
Does the add-on work with any Google Sheets spreadsheet?
Yes. As long as your spreadsheet has first name, last name, and company or website columns, the add-on works. You can map columns to any letter regardless of your current layout.
How long does a search take?
For 49 leads, the search completed in a few minutes. Processing time scales with list size, but the add-on runs in the background so you can continue working while it processes.
Conclusion
The Scalelist Google Sheets add-on removes every unnecessary step from the email enrichment process. You do not leave your spreadsheet. You do not manage exports and imports. You click one button and verified emails populate your rows automatically.
43 valid emails from 49 leads. One click. No extra tools.
Start with Scalelist’s free credits and run your first enrichment today.