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Verify emails, clean lists, and protect your email deliverability.

Website, pricing, platforms and company facts side by side.
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| Website | mozilla.org | proofy.io |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from the United States | Startup from the United States · 10 - 19 employees · 2015 |
| Listed in |
In their own words, as submitted to SaaSHub.


Get the browser that protects what’s important. No shady privacy policies or back doors for advertisers. Just a lightning fast browser that doesn’t sell you out.
Proofy is a multi-layer email verification platform built for businesses that need reliable email data at scale. It combines multiple validation signals to evaluate email addresses before they enter campaigns, CRMs, signup flows, or automated workflows. The verification process includes syntax...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
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Overall verdict
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Walkthroughs and reviews on video.
Mozilla Firefox Review
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Mozilla Firefox and Proofy.
Proofy's answer:
Proofy uses a multi-layer email verification process rather than relying on a single validation signal. It checks email syntax, domain and DNS configuration, MX records, SMTP and mailbox-level signals, disposable email addresses, catch-all domains, role-based addresses, mail-provider data, and additional risk indicators. Results are classified as Valid, Invalid, Risky, or Unknown, helping businesses make better decisions before sending. Proofy supports single verification, bulk email list verification, and REST API workflows in one platform.
Proofy's answer:
Proofy is designed for businesses that need reliable email verification without unnecessary complexity. It combines multi-layer verification, bulk list cleaning, and API-based validation with straightforward pricing and high-volume processing. Credits do not expire, duplicate addresses are not charged, and Unknown results are not charged. This makes Proofy a practical option for marketers, sales teams, SaaS companies, agencies, and developers who need predictable costs and flexible verification workflows.
Proofy's answer:
Proofy is built for email marketers, sales and RevOps teams, SaaS companies, developers, agencies, lead-generation teams, and businesses that manage large email databases. It is especially useful for organizations that need to clean email lists before campaigns, validate leads before they enter a CRM, verify signup addresses in real time, or integrate email verification directly into applications and backend systems.
Proofy's answer:
Proofy was created to make email verification simpler, more scalable, and more transparent for businesses working with email data. The platform evolved around a multi-layer verification approach that combines technical validation, mailbox-level signals, bulk processing, and API access. Its focus is helping businesses reduce invalid and risky email data while keeping verification workflows straightforward and cost-efficient.
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External articles and on-site reviews we used to compare the two products.


Firefox is a lightweight browser and doesn't require much space or memory, meaning it can operate smoothly even on lean machines. But it doesn't compromise on utility. It's packed with supplementary tools, like a...
Mozilla Firefox stands out as an open-source browser that prioritizes privacy and customization. As a top choice among browsers not based on Chromium, it has gained a loyal following thanks to its strong focus on user...
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