
NeverBounce
Kickbox
ZeroBounce
Email Checker
Email List Verify
Email Verifier
emailvalidation.io
Mailboxlayer is a free, simple and powerful JSON API offering instant email address validation & verification via syntax checks, typo and spelling checks, SMTP checks, free and disposable provider filtering, and much more.

GlobalEntity API
IsValid.dev
DORApp automates DORA compliance by generating XBRL reports, minimizing errors and effort. Designed for financial entities, its intuitive interface simplifies data entry, while public data enrichment (LEI) enhances accuracy.

Which is more popular?
Based on our record, mailboxlayer API seems to be more popular. It has been mentioned 5 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | mailboxlayer.com | dorapp.eu |
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In their own words, as submitted to SaaSHub.


No description of mailboxlayer API yet.
DORApp is a compliance-driven SaaS solution designed to help financial institutions manage ICT third-party providers while meeting the Digital Operational Resilience Act (DORA) requirements. The platform automates XBRL report generation, monitors ICT vendor risk, and simplifies regulatory...
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Share your experience with using mailboxlayer API and DORApp. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


I've found a few "free" APIs which tell you if the email address exists or not, they have a free tier for certain amount of queries. Try https://mailboxlayer.com and https://www.zerobounce.net. Source: about 4 years ago
What I mean by valid is whether it is deliverable or not. Like this https://mailboxlayer.com/. Source: about 4 years ago
In Inspector we use the mailboxlayer.com API to validate emails. The service is also able to detect fake email addresses, temporary addresses, and the actual existence of an email address using MX-Records and SMTP. - Source: dev.to / over 4 years ago
Tracking DORApp since Mar 2025.
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Verify your email address lists with our drag and drop interface, or integrate into your app with our API. Prevent fake and bot account sign-ups by confirming your users are real humans with a real email address.
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