1 fields, with a real example of each. You pay when the answer comes back, and never when it does not.
Field Name
Description
Example
certainty
Email verification confidence
very sure
Step by step03 / 05
How to use this feature
Get started in 3 simple steps.
Google Sheetssidebar
Claude · MCPjust ask
REST APIPOST /v1/enrich
Same engine, same credits
Add your data to Google Sheets.
Create a column with email addresses.
Email Verification
Full nameB ▾
Write toD ▾
1 credit / per verified
Run
column C
Select Email Verification
Open the Derrick add-on, choose Email Verification, and select the columns to validate.
NamePhone
Camille Laurent+33 6 •• •• •• 41
Thomas Bernard+1 415 ••• ••32
Sophie Moreaufinding…
Inès Duboisno match
200 OK· or the same as JSON
247 rows
Get a clean email list instantly
Your sheet fills with email verification results.
When to reach for it04 / 05
Email Verification use cases
Email Verification is a Derrick workflow that runs natively inside Google Sheets (plus REST API + MCP server). It pulls the data class you need and writes it back into the sheet your team already lives in - no CSV exports, no separate web app.
01
Trigger-based automation
have email verification pulled the moment a new lead lands in the sheet.
02
Bulk batch jobs
run email verification across thousands of rows in a single Sheets job.
03
ICP-fit scoring
feed email verification into your scoring model as a live signal.
04
Pre-outreach prep
enrich your list with email verification before the campaign launches.
Email Verification isn't tied to the Google Sheets sidebar. Every Derrick enrichment - this one included - is also exposed through the REST API and the MCP server, so you can run it from your CRM, your data pipeline, an AI assistant, or any no-code tool (Zapier, Make, n8n). Same credit cost as the add-on, same data. API access is included from the PLUS plan up.
"This app saved me so much time and effort. Great for anyone looking to build a contact list or network at scale quickly. As a start-up it's been invaluable."
Alex Clark
Director | SaaS GTM Leader
"Working pretty nifty compared to Snov.Io. Price wise it does give a fair shake, and IMO better interface since it's google sheets."
David Sire
Mortgage Broker at Zero Point Mortgage
"Derrick is a very simple and user-friendly app to enrich your contacts database. Best thing: you can test it for free. And then the price is so low, it's a no brainer."
Etienne Grange
CEO Form'actions
"I have been using other expensive apps or freemium like phantombuster, but Derrick has replaced them all. I love the simplicity of the Google sheet add-in, but what is best is the efficiency it delivers."
Julien Walon Cohen
CEO & Co-founder @ Diffly | B2B Sales Advisor
"Super easy to enrich linkedin urls using this tool. Both personal and company url data can be easily enriched with a click of a button."
Zaid Bilal
RevOps Professional
"Amazing Tool, I would like to advocate this to my colleagues. So that you can get more users. Keep it Up. 5 Stars!"
Asif Hanzala
Lead Generation Specialist at IdeaPeel
"The LinkedIn scraping and email finder combo is incredibly powerful. I can build a complete prospect list with contact info in under an hour. Absolute must-have for outbound."
Michael Kim
SDR Team Lead at CloudScale
"This app is fantastic. Brilliantly created to help small and mid sized businesses."
Dan Hughes
Founder/CEO, AlmanacIO
"Have tested over 10+ LI scraper apps, Derrick beats them all. Simple to use, accurate data, and affordable price."
AJ Alexander
Opportunity Prospector
Verifying email deliverability before you press Send is the cheapest insurance in B2B outbound - a single 5 % bounce rate burns your sender reputation for the next 60 days. Most teams use ZeroBounce or NeverBounce (priced per thousand verifications) - both reliable but slow when run from outside your spreadsheet.
Derrick reads a column of email addresses directly from Google Sheets and returns the verification status (valid / risky / invalid) + bounce-rate prediction in the next cells. Accuracy tracks ZeroBounce closely on B2B domains. Free up to 100 verifications/month, no card. The bulk use case that drives adoption : verifying entire enriched lists in one pass, then filtering out everything except "valid" before passing to Lemlist / La Growth Machine for sending. Higher volumes on the Derrick pricing page.
Do I need to install anything to use Email Verification?
+
Just the Derrick Google Sheets add-on (one click, no API keys, no developer setup). Once installed, Email Verification is one of the workflows available from the Derrick sidebar inside any Sheet. The same feature is also available via REST API and via the Derrick MCP server for Claude / ChatGPT.
Can I use Email Verification on a list of 1,000+ rows?
+
Yes - Email Verification runs as a batch job inside Google Sheets, with progress tracking and per-row credit accounting. The workflow scales linearly: 10 rows or 10,000 rows, the steps are identical and you can step away while it runs.
Where does the data behind Email Verification come from?
+
Derrick aggregates 10+ public-data sources (LinkedIn graph, company websites, registry data, web crawl, third-party providers) and runs a multi-source lookup for Email Verification. The first source that returns a confident match wins; if no source is confident enough, the cell is left blank rather than guessed.
Is Email Verification GDPR-compliant?
+
Yes. Derrick only enriches public data, doesn't store personal records beyond the duration of the lookup, and supports full deletion on request. The Sheets add-on runs inside Google's OAuth-protected environment so your data stays private to your account.
Can I trigger Email Verification automatically when I add a row?
+
Yes - set up a Google Sheets onEdit trigger (Apps Script, takes 2 minutes) so a new row in column A automatically runs Email Verification into column B. Pair with Zapier / Make / n8n to push CRM contacts directly into the sheet for hands-free enrichment.
