Bulk Email List Evaluator
Upload a CSV or TXT file and verify a list of email addresses for free. Find out how ZeroBounce delivers better bulk email list verification with 99% accurate results.
Test our email validator
Find out how ZeroBounce delivers better bulk email list verification with 99% accurate results. Upload a CSV, XLS, XLSX or TXT file and ZeroBounce will evaluate your list for free.
Want to check a single email address? Type it in — and get the result in seconds.
How to use the bulk email verifier
Upload an email list
You can verify emails in bulk by uploading your email list as a CSV file. If you’re unfamiliar, a CSV (Comma Separated Values) contains a list of data separated by commas.
As such, you want your email list to appear like the following:
Though your list of contacts likely contains additional data, our bulk email verifier focuses on the email addresses.
Email service providers (ESP) will allow users to download their lists as CSV files. You can also compile your email data within an Excel file and export it as a CSV. If you’re uncertain, check your platform’s help documentation to learn how to retrieve your list.
Enter a single email address
Alternatively, you can enter a single email for one-off testing. Enter the email address in the appropriate format and click verify to see your results.
Providing Better Bulk Email Verification for 300,000+ Clients
Reading your bulk email validation results
An invalid email address is any address that does not exist or is no longer in use by a real person. You can receive an invalid result from the bulk email checker if:
- The address does not exist
- There is a typo in the address
- The address does not follow the proper syntax
- The address is no longer in use
- The email domain is inactive
Invalid results lead to bounces. As your bounce rate increases, your email sender reputation suffers. Bounce rates higher than 2% can automatically alert ISPs (Internet Service Providers) and cause them to reject your emails or deliver them to spam.
It’s essential to identify the invalid addresses and make updates if possible. Purge any outstanding invalid results from your email list.
These are toxic for any email list.
A spam trap is an email set up by a public or private spam prevention service to catch email service abusers. If you scrape websites for lead data or purchase your email lists, you might pick up a spam trap.
Delivering messages to a spam trap has worse consequences than a bounce. Once the anti-spam service identifies you, they can blacklist your address and all other email addresses on your domain.
Once your domain is on a blacklist, ESPs can reject your emails entirely. Stay protected using our bulk email checker for free to stay on top of potential spam traps.
Catch-all email addresses are tricky because it’s challenging to identify if a real person is managing the inbox.
Catch-alls accept every email message that gets sent to invalid addresses on a domain. If you were to send a message to an invalid domain, instead of hard bouncing, the email would redirect to the catch-all address.
Most bulk email verifiers will identify catch-alls as “invalid.” However, every lead has a cost, and some catch-alls are worth maintaining. The ZeroBounce email scoring service can help you grade these catch-all emails to determine which ones you should keep and delete.
Abuse emails indicate addresses belonging to persons that abuse email reporting functions.
Rather than unsubscribing from your list, they freely report spam even if the sender adheres to their ESP’s acceptable sending practices.
While these are valid email addresses, abuse emails serve little more than to harm your email reputation. Our bulk email verifier helps you purge these from your lists.
Do Not Mail
Do Not Mail addresses may be valid, but you should avoid emailing them.
These addresses can belong to companies, roles, or individuals. You can further define a Do Not Mail address by one of six sub-categories:
- Robe-based catch-all
- Global suppression
- Possible trap
The bulk email list evaluator will help you determine if you have any Do Not Mail addresses on your list so that you can take the next steps in eliminating them.
The best email testing tools online
Will this email bounce? Use our email evaluator - for bulk email lists and in real-time
Spam traps, abuse emails, catch-alls, do not mail, and invalid addresses are all signs of an unhealthy email list. But which addresses are the culprits?
ZeroBounce’s bulk email list evaluator provides better email list verification than the competitor. We highlight every address with over 30 unique status and sub-status codes.
Bring your bounce rates down and start delivering more emails.Validate My Email List
How active are my contacts? Score each contact and discover which ones are the most valuable
Even with a valid email address, it’s tough to know how your emails will perform with a specific audience. Or is it?
ZeroBounce Score utilizes artificial intelligence to anticipate the activity levels of email contacts based on their history. A score of 0 indicates low activity, while a score of 10 indicates a highly-engaged email user. This is especially helpful for sorting out tricky catch-all emails on your email list.Score My Email Leads
I have a healthy email list, but will I reach the inbox? Test every new email message before you send it
Our free bulk email validator helps you identify harmful contacts on your list. However, removing them does not guarantee you’ll reach the inbox. Subject lines, content, and email server configuration can impact deliverability.
Don’t wing it with a new email campaign. Use the ZeroBounce inbox placement testing tools to determine where your emails will go before publishing your email campaign.Test My Inbox Placement
Can I be proactive against email blacklists? Monitor your email reputation 24/7
Even reputable email senders can end up on blacklists. However, it’s vital to identify when this happens so you can take action quickly.
ZeroBounce offers 24/7 blacklist monitoring to help you protect your domain and IP address. We’ll watch over 200 blacklist service providers and notify you of any unwanted activity the moment it happens.Monitor My Email Domain
Frequently asked questions
An email list evaluator, or bulk email checker, is a tool that shows the health of your email list based on a sampling of your contacts. The email list evaluator is free, allowing you to learn firsthand about your email list hygiene without committing to an email list cleaning service. If your email list evaluator results show a high percentage of invalid or high-risk emails, consider uploading your entire list to a proper email validation service immediately.
An email list evaluator gives you free, immediate, and accurate insight into your email list health. Many email marketers mistakenly believe that their email list is clean and healthy, only to struggle with high bounces and poor engagement. By periodically uploading your list to the email list evaluator, you can determine if it’s time to upload it to an email verification service before you send your next campaign. Doing so will drastically reduce bounce rates and ensure you reach your customers for better email marketing ROI.
The email list evaluator only validates a simple of your email list. It does this to get a quick, accurate snapshot of your email list quality before committing to an email validation service. If your email list evaluator results show a high percentage of invalid or risky emails, you should upload your entire list to an email validator to fully clean your complete email list.
Yes. The email list evaluator provides a quick snapshot of your email list health at no cost. It’s an excellent way to determine if your email contacts are up-to-date without prematurely using an email verification service. It’s recommended to take advantage of the email list evaluator regularly to know the best time to clean your email marketing list throughout the year.
An email list evaluator is a reliable tool for email marketers and companies submitting mass email communications. The evaluator provides a reliable, cost-effective way to learn more about your email list health before you upload your database for email validation.