OnlyValidEmails checks email addresses in your Google Sheets™ spreadsheet using the same SMTP verification as onlyvalidemails.com.

How to use:
1. Open Extensions → OnlyValidEmails → Verify emails
2. Paste your API key from onlyvalidemails.com → Settings → API Keys
3. Choose the column with email addresses
4. Start verification

Status is written to an OVE Status column as results arrive (Valid, Invalid, Catch-All, Unknown). Uses your existing OnlyValidEmails credits. Up to 100,000 unique emails per run.

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