Email Verifier Online checks single and bulk CSV email lists to cut bounces. Free credits, with paid plans from $5/mo. See features, pricing and limits.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
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Email Verifier Online is a web-based service that checks whether email addresses are valid. It is built for people who send to email lists and want fewer bounces, since the FAQ notes that unverified lists lead to high bounce rates and blocking by email service providers.
The company says it was an Internet software agency for nearly 10 years before building the tool, which began as an internal product after existing verifiers fell short on accuracy, speed, support and price.
Users create a free account, prepare a list in CSV format and upload it. They then open My Listing and click Verify. The site gives a rough speed of 100 validations per minute, and the final list can be downloaded or shared.
According to the FAQ, the process has more than 20 steps and checks each address up to 75 times from different locations, using MX, DNS, SMTP and social checks. Free deduplication and bad-syntax removal happen before a cost is given.
The tool covers single address checks, bulk CSV verification and a real-time check meant for validating addresses before sign-up. After a job finishes, an analysis report classifies results by type, such as deliverable, free account and deliverable with risk, and users can download only the list they need.
Other details include a dashboard for monitoring, 90-day data retention with permanent deletion on request, and priority support on paid plans. The site claims 10,000 addresses can be checked in about 5 minutes.
Email Verifier Online is a web-based tool that checks whether email addresses are valid. It supports single checks and bulk CSV uploads, and returns a cleaned list and an analysis report to help reduce bounces.
There is a free plan at $0. Paid plan cards list Starter at $5/mo, Growth at $10/mo, Pro at $18/mo and Enterprise at $48/mo, with yearly figures also shown. One address verification uses one credit.
Yes. Every new account gets free credits, and the FAQ says 1,000. The pricing page also mentions a 100,000-verification limited-time giveaway, so check the current offer when signing up.
The company says no verifier is 100% accurate but claims average deliverability of up to 98% with its checker. Its about page cites a 96%+ verification rate.
Only CSV files can be uploaded for bulk verification. A sample CSV file is available on the upload page.
No. The FAQ states it can verify most addresses, including custom domain emails, but does not check email status from catch-all domains.
Uploaded data is archived in your dashboard for 90 days and then deleted unless you remove it sooner. The company says data is never shared with others.
The sources name no specific integrations. The homepage says its real-time check can be integrated with unlimited platforms, so ask the vendor for details.