Free Email Tools for Marketing and Deliverability

Test your email deliverability and improve email ROI with our suite of free email marketing tools. Take advantage of everything you need from free email verification, deliverability tests, domain health checks, email authentication tools, and email marketing calculators at no cost.

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All

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Email Verification

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Email Health

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Email Authentication

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Email Calculators

Check your email domain for existing BIMI records and identify errors with your current BIMI configuration.
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BIMI Checker

Use the free BIMI generator to quickly create a BIMI record for your company email domain and display your company logo.
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BIMI Generator

Find out if your email domain or IP is blacklisted. Enter your domain, identify any blacklistings, and learn how to get removed.
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Blacklist Checker

Is your email bounce rate high? Find your campaign’s bounce rate with the free calculator now.
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Bounce Rate

Readers may be opening your emails, but do they click links inside? Calculate your campaign’s CTOR with the free calculator.
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CTOR

Notarize your company emails with the free DKIM generator. Enhance email security and stop spoofing attempts.
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DKIM Generator

Create your free DMARC record. Configure SPF and DKIM alignment while managing suspicious and unknown senders using your domain.
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DMARC Generator

Convert your IP address range to CIDR notation free. Ideal for network management and email server configuration.
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Convert IP Range to CIDR

Use the free CIDR to IP range converter and retrieve your IP range details in seconds.
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Convert CIDR to IP Range

Are you achieving healthy email list growth? Calculate your growth rate now to find out if you’re keeping up with email list decay.
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Email List Growth

Struggling with high bounce rates? Complete the email risk assessment and find out if your sender reputation is at risk.
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Email Risk Assessment

Test your email subject line now for any possible spam words or phrases.
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Email Subject Line Checker

What’s the best time to send an email? Find out now by using the free email send time tool and find the best send time for your industry.
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Email Send Time

Don’t believe your list needs cleaning? Compare your email signups to the average lifetime value, and find out how much email marketing ROI you lose without validation.
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Email Verification ROI

Get near-instant email verification at no cost. Identify invalid and high-risk email addresses with 99% accuracy.
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Free Email Verifier

Try the free bulk email checker and analyze a sample of your email list. Find out how much of your data is invalid to determine if your list needs cleaning.
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Free List Evaluator

Are you missing out on potential revenue from contacts using freemail providers? Calculate your potential revenue earnings now.
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Freemail Revenue

Do you have a good email open rate? Calculate your campaign opens and learn how to improve email marketing performance.
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Open Rate

Does your company receive too many spam complaints? Try our free tool and calculate your spam complaint rate fast.
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Spam Complaint Rate

Create your free SPF records to prevent email spoofing and ransomware attacks. Learn how to implement yours.
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SPF Generator

Have an idea for a free email tool?

We’re consistently working to improve the ZeroBounce platform for your email marketing needs.

Head over to our feature request form and let us know what new free email marketing or deliverability tool we can build to help your company!

Submit a feature request
A woman wearing a grey sweater sits at her desk and smiles at her laptop, which shows her latest email validation summary report.