MillionVerifier

The #1 Email Verification Service

Email & Phone Validation

2016 Founded

1-10 Employees

70,000+ Customers

Budapest, Hungary Headquarters

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Quick Facts

✓ Free Trial

Website

millionverifier.com →

Pricing Model

usage-based

Free Trial

unknown days

About MillionVerifier

MillionVerifier is a specialized email verification service designed to help marketers, sales teams and agencies keep their email lists clean and improve deliverability. Operated by GBD Software as a Service Private Limited Company in the EU, it focuses on bulk list cleaning, single-email checks and real-time API verification so that customers can reduce hard bounces and protect their sender reputation.

The platform offers several ways to verify emails: single checks in the web app, bulk verification via file upload or copy‑paste, integrations with major ESPs and CRMs, and both single and bulk APIs. Its verification engine performs deep checks including syntax, domain and DNS validation, SMTP handshakes, catch‑all and disposable detection, greylisting re‑verification, typo correction and classification of results into Good, Risky and Bad categories. MillionVerifier markets a 99%+ accuracy rate backed by a 100% money‑back guarantee if hard bounces exceed a specified threshold.

Beyond core verification, MillionVerifier’s EverClean service automates daily list hygiene directly inside connected email marketing tools, unsubscribing or removing invalid and risky addresses without manual exports. The company also bundles free access to EmailAcademy PRO, a toolkit offering blacklist monitoring, inbox testing and educational content about email deliverability.

Founded in 2016, MillionVerifier positions itself as a low‑cost alternative to larger verification vendors, emphasizing very competitive, never‑expiring verification credits and volume discounts. Its customer base is heavily skewed toward small businesses and agencies that need to verify large volumes of addresses cost‑effectively, though it also serves mid‑market organizations. While reviews consistently praise its pricing and ease of use, some users note limitations around support responsiveness and occasional performance issues, making it best suited to teams that prioritize price and basic automation over enterprise‑grade SLAs.

Key Features

Bulk email verification - upload TXT, CSV or XLSX files to clean large lists, with automatic duplicate removal and processing speeds up to roughly 1M emails in about 6 hours.

Single email checker - verify individual email addresses directly in the web app to see if they are Good, Risky or Bad before adding them to your lists.

Copy-paste list verification - paste raw email lists into the app, which converts them into a file and runs the full verification workflow.

Real-time verification API (single API) - validate emails in real time at signup or form submission, with rate limits around 160 requests per second per IP.

Bulk verification API - programmatically upload files and retrieve results for large databases, suitable for automation and resellers.

EverClean automated list cleaning - daily automatic verification of lists inside connected ESP/CRM accounts, removing or unsubscribing bad or risky emails based on rules.

Smart Verify technology - combines SMTP checks with additional heuristics and sending-behaviour data to reduce unknown and catch-all results and minimize false positives/negatives.

Comprehensive result codes - classifies addresses as OK, invalid, catch-all, disposable, unknown, free and role, and groups them into Good, Risky and Bad for easier decision-making.

High claimed accuracy with guarantee - advertises 99%+ verification accuracy and offers a 100% money-back guarantee if hard bounces exceed an agreed threshold after verification.

Credit-friendly billing - pay-as-you-go credits that never expire, no charges for unknown or catch-all results, and refunds for those statuses in bulk verification.

Extensive native integrations - direct connectors to dozens of ESPs and CRMs to import lists, verify them and push actions (e.g., unsubscribe invalid emails) back automatically.

Sub-user management - add colleagues as sub-users to a single account so teams can share credits without sharing logins.

Advanced account security - multiple API keys with IP whitelisting/blacklisting and optional two-factor authentication via Google Authenticator.

Notifications and auto top-up - configurable email notifications for low or zero credits, file readiness and file deletion, plus optional automatic top-ups.

Free EmailAcademy PRO access - bundled access to deliverability tools such as blacklist monitor, inbox tester, SPF/DKIM tester and educational lessons.

Best For

Company Size

smb mid-market enterprise

Industries

Marketing & Advertising SaaS Technology E-commerce Agencies B2B Services

Use Cases

Cold Email Outreach Newsletter and Marketing List Cleaning Sales Prospecting List Verification CRM and Marketing Automation Data Hygiene Real-time signup and form email validation Ongoing automated list hygiene for ESP accounts

FAQ

What is MillionVerifier?

MillionVerifier is an email verification platform that helps businesses clean and maintain their email lists. It offers bulk list verification via file upload or copy-paste, single email checks, real-time verification APIs and EverClean, an automated service that verifies and cleans lists daily inside connected ESPs and CRMs. The service classifies addresses into Good, Risky and Bad categories using deep checks such as syntax, DNS, SMTP, disposable and catch-all detection, and is marketed as delivering 99%+ accuracy with a money-back guarantee.

How much does MillionVerifier cost?

MillionVerifier uses a pay-as-you-go credit model plus optional monthly EverClean subscriptions. Standard verification credits start at about $37 for 10,000 emails and $129 for 100,000 emails, with per-email costs decreasing at higher volumes. Credits never expire and can be used across single checks, bulk uploads, integrations and API calls. For automated EverClean list hygiene, pricing starts around $15 per month for smaller databases, with higher tiers for larger daily verification volumes. New users can access a one-time free trial via free credits or discounted starter packs.

What are the main features of MillionVerifier?

Key features of MillionVerifier include bulk email verification via file upload or copy-paste, single email checking in the web app, real-time single and bulk APIs, and EverClean automated daily list cleaning in connected ESPs and CRMs. The verification engine performs syntax, domain and DNS checks, SMTP validation, greylisting re-verification, Smart Verify heuristics, and disposable, catch-all, free and role-based detection. The platform offers numerous native integrations, Zapier support, sub-user accounts, flexible API key management with IP restrictions, notifications and auto top-up, and free access to EmailAcademy PRO deliverability tools.

Who are MillionVerifier's main competitors?

MillionVerifier's main competitors are other dedicated email verification and list cleaning tools such as ZeroBounce, NeverBounce, Bouncer, Clearout, Emailable, EmailListVerify and Kickbox. Compared to these, MillionVerifier typically competes on price and flexible credits while offering solid but not always best-in-class accuracy and support. Buyers often compare it directly against ZeroBounce, NeverBounce and Clearout when evaluating pricing, accuracy, integrations and support levels.

Is MillionVerifier good for small businesses?

Yes. MillionVerifier is particularly well-suited to small businesses and agencies because of its low starting prices, pay-as-you-go credits that never expire and simple web interface. SMBs can clean lists occasionally using one-time credit packages without committing to a subscription, while more advanced users can enable EverClean or APIs as they grow. The trade-offs for small businesses are mainly around support responsiveness and the lack of advanced enterprise features or certifications, which many SMBs are willing to accept in exchange for lower costs.