Validate emails, remove duplicates, detect bad domains, and export clean CSV files in seconds.
Fast. Secure. Accurate.
Export-ready for every major platform
Dirty email lists hurt deliverability, damage your sender reputation, and inflate costs. Our platform eliminates the problem before it starts.
Start Cleaning FreeWhether you manage 1,000 or 1,000,000 contacts — Validate Sheets keeps your database organized and optimized.
A complete data cleaning pipeline — no code, no plugins, no integrations required.
Upload sheets with thousands of records in seconds. The app auto-detects your email column and headers.
Automatically detect invalid emails, fake domains, disposable addresses, syntax errors, and missing data.
Remove duplicate contacts automatically to keep lists clean and reduce send costs.
MX record checks verify that email domains are real and active before you send campaigns.
Instantly filter valid, rejected, missing, duplicate, and trash records with real-time search.
Download only valid, clean CSV files — ready for Mailchimp, HubSpot, Klaviyo, Salesforce, or any CRM.
Validate Sheets is used across every industry that manages contact databases.
No complicated setup. No technical experience required. Just upload, clean, and export.
Import your contact list securely. Works with any column layout — our system auto-detects your email field.
Our system automatically scans every row, validates domains, flags duplicates, and categorises results.
Download optimised CSV files instantly — valid contacts only, with no bad data polluting your campaigns.
Invalid contacts don't just waste money — they actively damage your business.
Run every list through our validator before sending. Catch bad data at the source — not after your metrics tank.
No setup fees. No contracts. Cancel anytime.
Perfect for getting started
For growing teams and heavy use
No limits, full power
You will see a prompt to upgrade before your next upload. Your existing sheets and data are never affected by the limit.
Your CSV is uploaded to a private server to process validation. It is never shared with third parties. You can delete any sheet permanently at any time.
Yes. Cancelling stops the next billing cycle. You keep full access until the end of the period you have already paid for.
After checking the email format, the app queries DNS to confirm the domain has an MX record — meaning it is set up to receive email. This catches many bad domains that pass a basic format check.
ZeroBounce is a third-party mailbox-level validator that checks whether an individual email address is deliverable. It is available on Pro and Business plans and requires your own ZeroBounce API key.
Exports are plain CSV files compatible with any platform — Mailchimp, GoHighLevel, HubSpot, Salesforce, ActiveCampaign, Klaviyo, and any other system that accepts CSV imports.
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