Bulk Email Verifier
Email list verification & cleaning maximizes the efficiency of your email marketing campaigns and protects your email sender reputation.
With our Bulk Email Validation service, cleaning an email list is very easy: just upload your email list here - the first 1,000 email address validations are FREE! You no longer have to check your emails one by one, so if you run an email marketing agency, call center or lead generator, our Bulk Email Verifier tool is exactly what you need to get high quality leads.
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Bulk Email Verification: How To Check If Your Email List Is Valid
Upload your email list as plain text (.txt) or as comma-separated values (CSV) file - one email address per line, CSVs with 'Email' as column header.
Bulk Email Verification ProcessOur Email List Validation process includes all of the following checks:
- Syntax verification (IETF/RFC standard conformance)
- DNS validation, including MX record lookup
- Disposable email address (DEA) detection
- SMTP connection and availability checking
- Temporary unavailability detection
- Mailbox existence checking
- Catch-All testing
- Greylisting detection
- Automatic retries for greylisted addresses
- Automatic retries for unavailable servers
- Automatic duplicate removal
We guarantee that during the entire verification process at no time will an email be sent to the respective recipient address.
Detailed Bulk Email Verification Status
As soon as the bulk validation process is finished, we send you an email and you can download the results. You may choose to download valid and invalid addresses as separate files. To match a result to a record in your database, you can merge the results with your input data when downloading the results. For each email address, we provide a detailed email validation status that shows you exactly the reasons why an email address is valid or not, so that you can fully understand the results and take appropriate action.
Bulk Email Verification FAQ
How do I validate email addresses from a database, Customer Relationship Management (CRM) system or Excel?
Databases, CRM systems and Excel are capable to export data to CSV (comma-separated values) files - please see the answer to the next question for instructions on how to upload a CSV file for validation.
How do I validate email addresses from Excel or a CSV file?
You can start the bulk validation process by uploading a CSV file (one email address per line, detailed instructions for Excel users) with a maximum size of 250MB (split larger lists into multiple files).
Excel files must be exported to CSV first:
- Open the file in Excel.
- Click Menu | Save As (Other Formats).
- Enter a name for the file and choose "Unicode Text (*.txt)".
- Click Save.
Why does my bulk validation task not start automatically, even though I paid the correct amount?
We use a third-party service (MyCommerce Share-It / Digital River) to manage payments. Please use the same email address both for your validation task and for the Share-It purchase, so that the task to start can be identified. If you already used a different email address, please send us an email so we can start your task manually.
Why does the list upload web form report thousands of addresses, when I only uploaded a few hundred?
Our automatic format detection tries to detect and convert files submitted in many common spreadsheet and archive formats, but this sometimes fails. If this happens, make sure you submit your list in one of the following formats:
You can check your list with our Bulk Email Verifier before uploading.