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Email Verifier
Fast, Accurate, Built
for Scale

Proofy is an email verification service that checks email addresses before you send. Identify invalid, risky, disposable, catch-all, and role-based addresses to reduce bounces, protect sender reputation, and keep your contact data clean.
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Trusted by 4,740+ Companies Worldwide

Choose How to Verify Email Addresses

Check one address, verify an uploaded list, or automate verification inside your product. Each option has a dedicated Proofy workflow.

Bulk Email Verification

Upload a CSV or TXT file, verify your list, and download segmented results.
1
Upload your file
2
Verify the list
3
Download results
Bulk Email Verification
Most Popular

Email Verification API

Validate email addresses in real time through Proofy's REST API for forms, apps, CRMs, and automated workflows.
Email Verification API

Free Email Checker

Check one email address instantly and see its verification status. No file upload required.
Free Email Checker

What Proofy's Email Verifier Checks

Each address is evaluated across multiple verification signals so you can separate deliverable mailboxes from invalid, risky, disposable, catch-all, and role-based addresses.
Risky Address Detection
Flags addresses that cannot be confidently treated as safe to send, so higher-risk contacts can be handled separately.
Role-Based Detection
Identifies shared or organizational inboxes such as info@, support@, sales@, and admin@ so they can be segmented separately.
MX Record Validation
Checks whether the domain has valid mail exchange records configured to receive email before mailbox-level verification begins.
Disposable Detection
Identifies addresses from disposable and temporary email services so throwaway inboxes can be reviewed or excluded before they affect list quality and campaign reporting.
SMTP Provider Details
Identifies the mail server behind each address - Google Workspace, Microsoft 365, Yahoo, and more - giving you deliverability insights and smarter list segmentation.
ISP Detection
Detects addresses from consumer email provider like Gmail or Yahoo - letting you segment consumer inboxes from business addresses for sharper targeting and better deliverability.
Invalid Mailbox Detection
Identifies mailboxes that fail verification or return a hard invalid response, helping keep undeliverable addresses out of your sending list.
Catch-All Detection
Identifies catch-all servers that may accept mail for any address at a domain even when a specific mailbox cannot be confirmed, so those results can be reviewed separately.
Mailbox Full Detection
Flags active mailboxes that are temporarily full and can't receive messages - so you skip the bounce now and retry when the inbox clears.
Domain Validation
Checks DNS and MX records to confirm the domain is active and properly configured to receive email - the first layer of every address verification.
Syntax Validation
Checks every address against RFC standards - catching typos, malformed formats, and missing characters before they waste verification credits or slip into your send list.
SMTP Verification
Connects directly to the recipient's mail server and simulates a delivery handshake - confirming the mailbox exists and accepts email, without sending a single message.

What Is an Email Verifier?

An email verifier checks whether an email address can receive mail without sending a message. Proofy validates the address format, confirms the domain and MX records, and checks the receiving mail server to classify the address as valid, invalid, risky, disposable, catch-all, or role-based.

Email verification helps remove bad addresses before campaigns, database imports, and CRM updates, reducing hard bounces and keeping poor-quality contacts out of your sending lists.

Proofy combines syntax, domain, MX, SMTP, disposable, catch-all, role-based, and risk checks in one verification process. For a deeper technical breakdown, see how email verification works.

Frequently Asked Questions About Email Verification

What is an email verifier?

An email verifier checks whether an address appears able to receive mail without sending a message. Proofy evaluates syntax, domain, MX, and mailbox-level signals, then returns a status such as Valid, Invalid, Risky, or Unknown. Verification helps reduce bad addresses before sending, but it does not guarantee delivery.

What is the difference between email verification and email validation?

Email validation is often used for format and basic domain checks, while email verification goes further by evaluating MX and mailbox-level signals. Proofy combines these checks in one process and returns a result based on the verification signals available.

What types of invalid emails does Proofy detect?

Proofy returns primary statuses such as Valid, Invalid, Risky, and Unknown. Additional signals can identify disposable, catch-all, and role-based addresses, helping you decide which contacts to send, suppress, or review.

How accurate is Proofy's email verifier?

Proofy combines syntax, domain, MX, SMTP, disposable, catch-all, role-based, and risk checks to classify email addresses using multiple verification signals. Catch-all domains are flagged separately because their mail servers may accept messages without confirming whether a specific mailbox exists.

Does email verification send an email to the address being checked?

No. The verification process checks without sending any message. It simulates the beginning of an SMTP delivery and terminates before any message is sent. The address owner is never notified and no email appears in their inbox.

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

Sending emails to invalid addresses can result in high bounce rates, which can harm sender reputation and email deliverability. Proofy.io verifies email addresses to ensure they are valid and deliverable, reducing bounce rates. The verification process is fast, allowing users to quickly clean their email lists and ensure they are up to date. It is easy to use, the user interface is friendly, and it was implemented in less than a day. Proofy has great customer support, they replied and helped us.

Arjuna M.
Web Developer
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
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Start Verifying Email Addresses Today

Proofy's email verifier software removes invalid, disposable, and risky addresses before they reach your list.
First 5000 verification credits just $5
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