What is Bulk Email Validation?
Bulk email validation lets you verify multiple email addresses simultaneously instead of checking them one at a time. Simply paste your list, click verify, and EmailProber runs a 15-point verification on every address in parallel - including SMTP verification, disposable detection, blacklist scanning, and more.
Each email receives a deliverability score from 0 to 100 and a clear verdict: Safe to Send, Review Before Sending, or Do Not Send. Export your clean list to CSV, Excel, JSON, SQL, or XML with one click.
Why Validate Your Email List?
Sending to invalid or risky addresses hurts your sender reputation, increases bounce rates, and can get your domain blacklisted by ISPs. Regular list hygiene is essential for anyone running email campaigns, newsletters, or transactional emails.
- Reduce bounce rates: Remove non-existent mailboxes before they bounce
- Protect sender reputation: ISPs track your bounce rate and penalize high-bounce senders
- Catch disposable addresses: Identify throwaway emails that will never engage
- Detect spam traps: Find blacklisted domains that could flag your campaigns
- Improve deliverability: Clean lists mean more emails reach real inboxes
What Gets Checked
Every email in your batch runs through the same 15 verification layers as our single-email validator:
SMTP Verification
Direct connection to the mail server to confirm the mailbox exists and accepts mail.
Disposable Detection
Cross-references 250+ known disposable providers like Guerrilla Mail and Mailinator.
SPF & DMARC
Checks domain authentication records that protect against spoofing and phishing.
Blacklist Scan
Scans the mail server IP against DNS-based blacklists used by spam filters.
Understanding Your Results
Verdict Scores
Every email receives a score from 0 to 100 based on all 15 verification layers. The score determines the verdict:
- Score 80–100: Safe to Send: The email passed all critical checks. SMTP verified, domain is legitimate, no red flags detected. Safe for marketing and transactional email.
- Score 40–79: Review Before Sending: Some risk factors detected. The email may be a catch-all address, role-based (info@, support@), or have missing SPF/DMARC records. Consider verifying manually or segmenting these contacts.
- Score 0–39: Do Not Send: The email is disposable, invalid, blacklisted, or has critical issues. Sending to these addresses will hurt your sender reputation and increase bounce rates.
Frequently Asked Questions
How many emails can I validate at once?
Up to 25 email addresses per batch. Simply paste them into the text area (one per line) and click Verify All. The server processes 5 emails concurrently for optimal speed.
Is bulk validation free?
Yes, completely free with no signup, no API keys, and no usage limits. EmailProber is 100% free forever.
Can I export the results?
Yes. After validation completes, export your results in six formats: CSV, Excel (.xlsx), JSON, SQL INSERT statements, XML, or copy to clipboard as a tab-separated table for pasting into spreadsheets.
How long does bulk validation take?
Most batches of 25 emails complete in 30–90 seconds depending on mail server response times. The progress bar and per-email status list show real-time updates as each address is verified.