Verifying bulk email lists to reduce bounce rates and improve sender reputation. Bulk email list verification to improve deliverability and reduce bounces. Email verification API with simple HTTP API and client libraries for Node.js, Ruby, and Python.
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Alternatives to mailtester
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Consider switching if these limitations affect you: The free version allows verification of only one email at a time with rate limits depending on server load. No API is provided for bulk email address finding due to legal restrictions.
Verified alternatives
Each one checked against mailtester: it does the same main job for a similar customer, so a buyer could choose it instead.
EmailsConfirmed is an email verification tool designed for bulk list cleaning and real-time signup validation to improve deliverability and reduce bounces. It offers unlimited email verifications with a one-time payment model, avoiding subscriptions or usage-based fees.
Marketing & advertisingFree plan
Fonatica is a B2B lead generation tool that finds and verifies business and personal email addresses quickly. It offers tools to discover, verify, and manage email contacts at scale with GDPR compliance and API access.
Sales & CRMAuto-researched
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