Bulk Email Verifier‍

Proofy's bulk email verifier is built for file-based verification at scale. Upload a CSV or TXT list, process it in one workflow, and export results by status when the job is complete.

High Verification Accuracy

Proofy combines syntax, domain, MX, and mailbox-level signals to classify addresses. For conclusive valid and invalid results, the verification process is designed for up to 99% accuracy. Catch-all or restricted servers can return Risky or Unknown instead of false certainty.

Fast
‍Email Verification

Process large uploaded lists without checking addresses one by one. Bulk jobs run server-side, so you can upload the file, continue working, and download the result when processing is complete.

Secure Detailed Reports

Download structured results segmented by verification status while preserving your original file columns. Uploaded files can be deleted from the dashboard and are automatically removed after the retention period.

Flexible Pricing

Start with 5,000 trial verification credits for $5. Larger volumes use tiered pricing, and subscription plans include a discount. Credits do not expire, so bulk verification can be purchased when needed.

How does it work?

Bulk email verification with Proofy takes three simple steps. No software to install, no technical setup required. Just upload your list, run the check, and download clean results.

Step one

Sign up to create your account and get access to the Admin panel. Enter your work email and confirm registration. New users can purchase 5,000 trial credits for $5 to start verifying right away.

Step Two

Sign in to the Proofy Admin panel and upload your email list as a CSV or TXT file, up to 65 MB and up to 1 million addresses per file. Proofy detects your email column automatically. Hit the Proof button to start bulk email verification.

Step three

Click the Download button, select a preset to download (Valid, Risky, Invalid), or set up a custom export. Results are also available via webhook for automated pipelines.

What Proofy Checks During Bulk Verification

Every address passes through a multi-layer pipeline
before it lands in your export.

Bulk Verification Checks Applied to Every Address

Syntax validation - checks email formatting before external lookups.

DNS and MX validation - confirms the domain exists and is configured to receive email.

Mailbox-level verification - evaluates mail-server responses without sending a message.

Disposable email detection - identifies temporary and throwaway email providers.

Catch-all detection - flags domains where mailbox-level confirmation is uncertain.

Role-based detection - identifies addresses such as info@, support@, admin@, and sales@ for separate review.

What Is Bulk Email Verification?

Bulk email verification checks an uploaded email list in one workflow instead of validating addresses one by one.

Upload a CSV or TXT file and Proofy processes each address through syntax, domain, MX, and mailbox-level checks. The output is a downloadable file with verification results for every row, so large lists can be reviewed and segmented without manual checking.

Bulk verification is designed for scale. A single file can contain up to 1 million addresses, making the workflow suitable for large CRM exports, campaign lists, migrations, and database audits.

Invalid, disposable, catch-all, role-based, risky, and unknown results are labeled so teams can decide how each segment should be handled before importing the file back into a CRM or email platform.

Proofy does not send a real email during verification. Processing time depends on list size and the responsiveness of remote mail servers.

FAQ about Bulk Email Verification Service

Is bulk email verification service free?

Bulk verification is not free. New users can start with 5,000 trial verification credits for $5 to test the workflow on a real list before purchasing a larger package.

What does it mean when email addresses are marked "accept all"?

Catch-all, also called accept-all, means a domain is configured to accept mail for any address at that domain. Because the server may accept a request even when a specific mailbox cannot be confirmed, Proofy classifies catch-all results as Risky rather than fully Valid.

How fast is your bulk email validator?

Processing time depends on list size, provider mix, and how quickly remote mail servers respond. Bulk jobs run server-side and large files are processed automatically, so you do not need to keep the browser open while verification runs.

Can email address marked "valid" in the Bulk Email Verifier bounce?

Yes. Email status can change after verification, and temporary server conditions can affect later delivery. Proofy is designed for up to 99% accuracy on conclusive valid and invalid results, while uncertain server responses are returned as Risky or Unknown instead of being forced into a Valid result.

What is the Bulk Email Verifier?

The Bulk Email Verifier processes an uploaded CSV or TXT file containing many email addresses in one job. Proofy checks each address and returns a downloadable file with verification results, so teams can review large lists without validating addresses one at a time.

Do you send an email to verify an email address?

No, we do not send emails to verify addresses. Our verification process uses advanced algorithms to validate email addresses without sending any messages.

Do you share my email lists or use them in any other way?

Proofy does not sell your uploaded email lists. Bulk files are used to provide the verification service, can be deleted manually from the dashboard, and are automatically removed after 60 days.

Does it require any app or program installed?

No. Bulk email verification runs in the browser and is processed on Proofy's servers. Upload the CSV or TXT file, start the job, and download the results when processing is complete.

See what our customers are saying

Here is what some of our customers say about our platform

5.0

Proofy offers reliable email validation at an affordable rate, outperforming many pricier alternatives. It's straightforward to use and easy to integrate into existing systems.

Samridhi K.

Senior Manager Campaigns

5.0

The standout feature of Proofy for me is its unparalleled efficiency in purifying and validating email lists. It's incredibly adept at weeding out defunct or bogus email addresses, which has markedly enhanced the quality of my mailing lists. This, in turn, has boosted open rates and engagement, a testament to the tool's effectiveness. The user-friendly dashboard and straightforward functionality make it a joy to use, streamlining my email marketing efforts.

Felipe R.

Gestor de Mídias Sociais

5.0

Proofy is a reliable email verification tool that offers high accuracy in identifying invalid or risky email addresses, which significantly reduces bounce rates and enhances email deliverability. Users appreciate its user-friendly interface and quick processing times, making it efficient for managing large email lists. Additionally, Proofy provides detailed reporting and affordable pricing, making it a standout tool for email marketing campaigns.

Denish V.

Company Owner

5.0

The best thing is their accuracy and their respond time. It saves a lot of time. Easy to implement, their customer support is awesome and I use it everyday. Integration they have is one of the best things.

Taša T.

Technical Customer Support Representative

5.0

My email marketing approach relies on Proofy.io, a strong email verification service. Its simplicity is my favourite feature. Its easy design and navigation allow uploading email lists and getting results fast. I trust my email database because of the email verification process's correctness. Proofy.io has helped me avoid sending emails to invalid or dormant addresses, improving email deliverability and providing additional subscriber engagement options. The best feature I like is Prompt Processing with understandable results.

Baloch L.

Information Technology Specialist

Read All Reviews

Bulk Email Verification Service