Stop Email Bounces - Guaranteed.
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Have a high email bounce rate? It doesn’t have to be that way.
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99% accurate invalid email detection
Get a 2% or lower email bounce rate (guaranteed)
Identify 30+ email types (spam traps, disposable, abuse emails, etc.)
Reach the inbox - every time
The most secure email bounce detection software available
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Verify up to 100 emails monthly - free
Definitive email bounce management solutions
99% accuracy & precision
Competitors often can’t verify certain emails or domains - leaving you with “unknown” data.
ZeroBounce identifies every email type, including:
Valid & invalid emails
Spam traps
Abuse emails
Catch-alls
Disposable domains
We give you the data you need to make the decisions that are right for you.
Bulk email list cleaning
Whether you’re a new startup or a large-scale enterprise, ZeroBounce cleans your list efficiently.
Upload your list as a file, via the cloud, or through one of our 50+ integrations.
Featuring integrations like WordPress, Shopify, Salesforce, and HubSpot
No file size or file limit restrictions
Supports Dropbox, Google Drive, Microsoft OneDrive, Amazon S3, and SFTP/FTP
Submit files via API
Email bounce API
You’ve got a clean list - but how do you stop email bounces in the future?
Get automated email bounce checking with the ZeroBounce API. Customize it for your website, landing pages, and email signup forms to stop invalid, risky emails in their tracks.
Available in 15 languages: JavaScript, Python, iOS, Android, and more.
Single/batch email validation
Bulk file uploads
Monitor API usage
Monitor credit usage
Custom allow and blocklists
A hard email bounce checker makes you the hero
Get your email bounce rate to 2% or lower
Identify 30+ email types - make smarter decisions about your list
Lower spam complaint rates
Free appended geolocation and social data
100 free email verifications monthly
99% accuracy - money-back guarantee
Become an email marketing hero
The No. 1 email validationⓘA process that determines if an email address uses valid syntax, exists on a given domain, and is configured to receive incoming email messages service for 400,000+ clients
Frequently asked questions
An email bounce is what occurs when your message cannot be delivered to its destination. Common causes of email bounces are invalid email addresses, mail server configuration errors, spam filters, and a full mailbox.
A hard bounce is caused by a permanent issue, such as an invalid email address. If the address you’re attempting to email doesn’t exist, your message will never reach its destination and bounce back. A soft bounce happens due to temporary, resolvable issues such as spam filters or greylisting, a full mailbox, or a temporary service outage. You can typically resend an email that soft bounces and reach the inbox successfully later.
Internet service providers (ISPs) need to separate trustworthy email senders from spammers. Email bounce rate metrics help with this. If your business has a high email bounce rate, it indicates that you don’t clean your email list or use safe email marketing practices. When your email bounce rate exceeds 2%, your reputation is put at risk, and your email deliverability declines. You’ll have a much harder time reaching the inbox.
The best way to stop email bounces is to clean your email list with a bounce checker or email verification tool. It will identify invalid emails and remove them from your list so that you’re only emailing real subscribers. In addition, make sure your emails are relevant, free of spam trigger words, contain an unsubscribe link, and are lightweight and easy to render.
Lower your email bounce rate - reach the inbox.
Get 100 free email verifications each month