Most email verifiers only check syntax and DNS — they can't tell if a Gmail or iCloud address actually exists. CheckMail1 uses browser automation to simulate real login attempts on Gmail, iCloud, Yahoo, Outlook, and 20+ providers. • Browser-based verification for major providers • SMTP check for business domains • Bulk CSV upload • API access • Pay-as-you-go pricing Perfect for email marketers and developers who need accurate lists.
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Maker
📌
Hey Product Hunt! 👋
I built CheckMail1 after getting frustrated with email verifiers that only check syntax and DNS records — they'd mark fake Gmail addresses as "valid" because the domain exists.
CheckMail1 actually opens a browser and simulates a real login attempt to check if the account exists on Gmail, iCloud, Yahoo, Outlook, and 20+ other providers. It's the same thing a human would do manually, just automated.
Use cases I've seen so far:
• Cleaning cold outreach lists before campaigns
• Validating leads from signup forms
• Removing hard bounces before they hurt sender reputation
Happy to answer any questions about how the browser-based verification works! 🚀
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Would love to see a webhook option for bulk jobs so I can get notified the moment a large CSV finishes verifying, instead of having to keep refreshing the dashboard. That would make it way easier to plug into my existing workflow.
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Maker
@nuranerciygu5u Webhook support is a great idea! We'll add webhook notifications for batch jobs so you get an instant ping when your CSV is done — no more refreshing. Adding this to our next release. Thanks for the feedback!
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It would be awesome if you could flag role-based addresses like info@ or support@ separately from personal inboxes. Right now most of us end up cleaning those out manually after the report, so building that filter in would save a ton of time for marketers running big lists.
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Maker
@ylmaz5plh Great suggestion! Filtering role-based addresses (info@, support@, noreply@) separately is definitely on our roadmap. We'll add a "role-based" flag to the results so you can filter them out easily. Stay tuned!
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Maker
Hey PH community! 👋
I just published a deep dive on email verification tools for 2026.
If you're tired of high bounce rates killing your email campaigns, check out CheckMail1 — free, no signup required, supports Gmail, Yahoo, Outlook, iCloud and 150+ providers.
→ https://checkmail1.com
Would love your feedback!
Would love to see a webhook option for bulk jobs so I can get notified the moment a large CSV finishes verifying, instead of having to keep refreshing the dashboard. That would make it way easier to plug into my existing workflow.
@nuranerciygu5u Webhook support is a great idea! We'll add webhook notifications for batch jobs so you get an instant ping when your CSV is done — no more refreshing. Adding this to our next release. Thanks for the feedback!
It would be awesome if you could flag role-based addresses like info@ or support@ separately from personal inboxes. Right now most of us end up cleaning those out manually after the report, so building that filter in would save a ton of time for marketers running big lists.
@ylmaz5plh Great suggestion! Filtering role-based addresses (info@, support@, noreply@) separately is definitely on our roadmap. We'll add a "role-based" flag to the results so you can filter them out easily. Stay tuned!