# Top Free Email Verification Software - Page 5 ## How Many Email Verification Software Products Does G2 Track? **Total Products under this Category:** 190 ### Category Stats (Aug 2026) - **Average Rating:** 4.55/5 The average rating of products in this category, based on all submitted ratings - **Top Trending Product:** QuickEmailVerification (+1.56%) - Among all products in this category, QuickEmailVerification recorded the largest rating increase compared to last month _Last updated: August 04, 2026_ ## How Does G2 Rank Email Verification Software Products? **Why You Can Trust G2's Software Rankings:** - 30 Analysts and Data Experts - 35,600+ Authentic Reviews - 190+ Products - Unbiased Rankings G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category. ## G2 Grid® for Email Verification Software ![G2 Grid® for Email Verification Software plotting products by satisfaction and market presence](https://www.g2.com/categories/email-verification/grids.png?focus%5B%5D=577&focus%5B%5D=41755&focus%5B%5D=19743&focus%5B%5D=16297&focus%5B%5D=97906&focus%5B%5D=103316&focus%5B%5D=1193954&focus%5B%5D=14858) Highlighted products: GTM Workspace - Powered by ZoomInfo, ZeroBounce, Apollo.io, RocketReach, Clearout.io, Wiza, Reoon Email Verifier, and Kickbox. Underlying data: [Grid® JSON](https://www.g2.com/categories/email-verification/grids.json?focus%5B%5D=gtm-workspace-powered-by-zoominfo&focus%5B%5D=zerobounce&focus%5B%5D=apollo-io&focus%5B%5D=rocketreach&focus%5B%5D=clearout-io&focus%5B%5D=wiza&focus%5B%5D=reoon-email-verifier&focus%5B%5D=kickbox) **Sponsored** ### Apollo.io Apollo.io is an AI-powered go-to-market (GTM) platform that helps revenue teams find, engage, and manage B2B buyers across the entire sales cycle. Apollo.io is the company behind the industry’s first fully agentic GTM platform, transforming how revenue teams execute. Going beyond automation, Apollo’s intelligent agents actively drive results across the entire sales funnel – from prospecting to deal management – all in one place. Trusted by millions of users and hundreds of thousands of companies – including Anthropic, Autodesk, and Docusign – Apollo is making world-class go-to-market simple, intelligent, and accessible for all. Apollo serves sales development representatives, account executives, sales leaders, revenue operations, and marketing teams at B2B organizations of various sizes. Teams use Apollo to build and maintain target account lists, orchestrate outbound and inbound motions, manage opportunities, and understand which activities lead to qualified pipeline and closed revenue. Key capabilities include: Data and targeting: Access to a large B2B database with company and contact details, including firmographic, technographic, and buyer signal data, so users can define ideal customer profiles and create precise segments for outreach. Prospecting and enrichment: Tools to search, filter, and save prospect lists, plus enrichment workflows that keep contact and account records up to date in Apollo and connected systems such as CRM. Sales engagement: Multi-step, multi-channel sequences for email, calls, and tasks that standardize how reps follow up with prospects, with controls for timing, throttling, and deliverability. Agentic and AI-assisted workflows: Intelligent agents and AI features that help with account research, lead scoring, message generation, and next-step recommendations so reps can prioritize and personalize at scale. Deal and activity management: Basic CRM-style functionality for tracking opportunities, stages, activities, and notes, giving teams a single view of pipeline health and sales performance. By combining data, engagement, and deal execution in one platform, Apollo is designed to reduce the number of disconnected tools in a typical GTM stack and provide a consistent workflow for building pipeline and managing deals. This helps organizations improve data quality, increase seller productivity, and run more structured, measurable go-to-market programs. [Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=1319&secure%5Bchosen_at%5D=2026-08-08T22%3A41%3A46Z&secure%5Bdisplayable_resource_id%5D=1319&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=1319&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=19743&secure%5Bresource_id%5D=1319&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Femail-verification%2Ffree%3Fcategory_id%3Demail-verification%26page%3D5&secure%5Btoken%5D=65766e502e52cb7f4a4a564a7d1bde525129687cd5c3fae915de8cf1caed15e0&secure%5Burl%5D=https%3A%2F%2Fwww.apollo.io%2Fdemo%3Futm_source%3Dg2%26utm_medium%3Dcpc%26utm_campaign%3DG2Clicks%26utm_content%3Dtopic%26utm_term%3Demailverification&secure%5Burl_type%5D=custom_url) ### [Linkwheelie](https://www.g2.com/products/linkwheelie/reviews) Export Your LinkedIn Search Results, Have The Data Of Those Leads Cleaned & Formatted, Enrich Them With 100% Valid And Verified Emails , **Average Rating:** 5.0/5.0 **Total Reviews:** 1 #### How Do G2 Users Rate Linkwheelie? - **Quality of Support:** 10.0/10 (Category avg: 8.9/10) - **AI Text Generation:** 5.0/10 (Category avg: 7.5/10) #### Who Is the Company Behind Linkwheelie? - **Seller:** [Sharpheads Technologies Pvt ltd](https://www.g2.com/sellers/sharpheads-technologies-pvt-ltd) - **Year Founded:** 2023 - **HQ Location:** Noida, IN - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=62619e301613bf35a4f4d0d2e0e84b78cc54e0c06d91082b457c8a4e88eb6436&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Flinkwheelie&secure%5Burl_type%5D=linkedin_company_website) 2 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 100% Small #### What Are Recent G2 Reviews of Linkwheelie? **["Perfect for finding emails from LinkedIn"](https://www.g2.com/survey_responses/linkwheelie-review-9115797)** **Rating:** 5.0/5.0 stars _— Krishna V._ [Read full review](https://www.g2.com/survey_responses/linkwheelie-review-9115797) ### [Salestools](https://www.g2.com/products/salestools/reviews) Salestools.io build the world's first AI SDR's and AI Sales agents, pioneered since 2018. Unlike traditional sales intelligence tools, our AI-driven solution operates independently owning the data layer to execute end-to-end prospecting, outreach, and engagement at unprecedented scale. Salestools.io AI SDR's work autonomously to target, prospect, reply 24/7, handle objections and build personalised outreach by Email and LinkedIn. It creates personalized, unique, and relevant emails for each prospect and LinkedIn messages on behalf of every sales representatives, and none will know. It uses Social Selling engagement mechanism crafting comments on autopilot or co-pilot and 87% connection request rate is guaranteed. Forget lead forms - Salestools empowers you to identify and engage every anonymous website visitor, even those who don't leave their information. By seamlessly integrating ExactVisitor.com, we reveal the true identities behind your website traffic. No more guessing games. Now you can pinpoint the exact decision-makers visiting your site and immediately add them to highly personalized outreach campaigns. Our AI-powered systems craft custom connection requests and messaging that captivates each prospect, driving engagement and new pipeline. **Average Rating:** 4.3/5.0 **Total Reviews:** 19 #### How Do G2 Users Rate Salestools? - **Has the product been a good partner in doing business?:** 7.6/10 (Category avg: 9.2/10) - **Ease of Admin:** 8.0/10 (Category avg: 9.2/10) - **Quality of Support:** 7.9/10 (Category avg: 8.9/10) #### Who Is the Company Behind Salestools? - **Seller:** [Salestools](https://www.g2.com/sellers/salestools) - **Year Founded:** 2015 - **HQ Location:** San Francisco, US - **Twitter:** @Salestoolsio 1,340 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=65d1fc3a61c8f41d0bad48db9f371c5d4de72b3a5fefd87e8075e3be6db97e78&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fdemandgroup%2F&secure%5Burl_type%5D=linkedin_company_website) 11 employees on LinkedIn® #### Who Uses This Product? - **Top Industries:** Computer Software, Information Technology and Services - **Company Size:** 50% Small, 25% Large #### What Do G2 Reviewers Say About Salestools? _AI-generated summary from verified user reviews_ ##### Pros - Users commend the **effective digital sales approach** of Salestools, aiding contributors in driving better results. - Users commend how Salestools effectively enhances **digital sales strategies** , greatly improving contributor support and user experience. - Users commend the **thoughtful design** of Salestools, enhancing digital sales and user support effectively. - Users commend Salestools for its **thoughtful user support** that enhances digital sales efforts effectively. ##### Cons - Users report feeling **trapped by a non-user-friendly experience** , facing unresolved subscription and payment issues with Salestools. - Users experience significant **payment issues** with Salestools, facing difficulties canceling subscriptions and obtaining refunds. - Users express frustration over **poor customer support** , feeling trapped by payment issues and unresponsive service from Salestools. - Users highlight **subscription issues** with Salestools, facing difficulties with cancellations and unresponsive customer service. - Users express frustration over persistent **bug issues** , creating significant obstacles and leading to refund difficulties and poor support. #### What Are Recent G2 Reviews of Salestools? **["AI SDR's"](https://www.g2.com/survey_responses/salestools-review-5068667)** **Rating:** 5.0/5.0 stars _— Verified User in Computer Software_ [Read full review](https://www.g2.com/survey_responses/salestools-review-5068667) **["If you're in B2B this is a must"](https://www.g2.com/survey_responses/salestools-review-5316618)** **Rating:** 4.5/5.0 stars _— Ivan X._ [Read full review](https://www.g2.com/survey_responses/salestools-review-5316618) #### What Are G2 Users Discussing About Salestools? - [What is ExactVisitor used for?](https://www.g2.com/discussions/what-is-exactvisitor-used-for) ### [VeriMails](https://www.g2.com/products/verimails/reviews) VeriMails is a real-time email verification platform built for cold outreach, list cleaning, and CRM hygiene. We check syntax, MX records, SMTP delivery, and run catch-all detection on every email you submit. The cheapest verifier on the market — up to 30× cheaper than ZeroBounce at scale. Our REST API responds in under 2 seconds and supports single verification, bulk CSV uploads, and email finding. Pricing starts at $12.50/mo on annual plans for 10,000 verifications per month. Monthly subscriptions start at $15/mo. Credit packs start at $19 for 10,000 verifications and credits never expire. Five subscription tiers from Starter (10K/mo) to Agency (1.5M/mo) plus custom Enterprise. Email Finder included at 20 credits per found and verified email — charged only on success. New users get 100 free credits on signup with no credit card required. Integrations: HubSpot, Salesforce, Mailchimp, Apollo, Zapier, Smartlead, Instantly, Lemlist, Make, and more via REST API. **Average Rating:** 5.0/5.0 **Total Reviews:** 1 #### Who Is the Company Behind VeriMails? - **Seller:** [VeriMails](https://www.g2.com/sellers/verimails) - **HQ Location:** N/A - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=f41aedb3652477c2d660a83bcd19cd39aaa0bb9181bf03d0c0521e86794fbd01&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fverimails&secure%5Burl_type%5D=linkedin_company_website) 1 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 100% Small #### What Are Recent G2 Reviews of VeriMails? **["Essential Tool for Campaign Success"](https://www.g2.com/survey_responses/verimails-review-12948802)** **Rating:** 5.0/5.0 stars _— Martin G._ [Read full review](https://www.g2.com/survey_responses/verimails-review-12948802) ### [ApexVerify](https://www.g2.com/products/apexverify/reviews) We are a global technology company specializing in contact data verification across email, phone, and physical addresses. By leveraging industry-leading protocols, advanced validation algorithms, and secure compliance standards, we ensure that businesses worldwide can trust the accuracy and reliability of their customer data. Our platform is designed to deliver instant, seamless verification through a user-friendly online interface that enables one-click processing, as well as bulk file uploads and API integrations for automation at scale. Whether you’re optimizing lead quality, improving deliverability, maintaining CRM hygiene, or ensuring regulatory compliance, our solution provides fast, accurate, and actionable results. With a focus on speed, security, and scalability, we empower companies of all sizes, from startups to global enterprises, to unlock the full potential of their data, enhance customer engagement, and drive sustainable growth. #### Who Is the Company Behind ApexVerify? - **Seller:** [HyperMesh Network](https://www.g2.com/sellers/hypermesh-network) - **Year Founded:** 2025 - **HQ Location:** N/A - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=ea72be164943b59022e5e5f049b6affd1afdec4ffe33d5b92c7a5af729b5ad76&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fapexverify%2F&secure%5Burl_type%5D=linkedin_company_website) 1 employees on LinkedIn® #### Who Uses This Product? - **Company Size:** 100% Medium ### [Autheona](https://www.g2.com/products/autheona/reviews) Autheona is a real-time, API-based trust verification platform designed to stop fake signups, bot traffic, and fraudulent users during a registration or onboarding flow. It is designed to filter out junk data before it reaches your database, aiming to improve user conversion. #### Who Is the Company Behind Autheona? - **Seller:** [Autheona](https://www.g2.com/sellers/autheona) - **Year Founded:** 2026 - **HQ Location:** N/A - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=a815e8bb3802963b3b2333605bff69a6417eac9ae954c977c3ba5b67d8745827&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fautheona%2F&secure%5Burl_type%5D=linkedin_company_website) 1 employees on LinkedIn® ### [BounceGuard](https://www.g2.com/products/bounce-guard-bounceguard/reviews) BounceGuard is an email validation, deliverability, and email finding platform helping many businesses reduce bounces and land their emails in the inbox. We improve your connection with customers and prospects so you can make more sales with email. BounceGuard’s team works across the globe to bring you the tools you need to make your emails a success. #### Who Is the Company Behind BounceGuard? - **Seller:** [Bounce Guard](https://www.g2.com/sellers/bounce-guard) - **Year Founded:** 2019 - **HQ Location:** Santa Clara, US - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=be7bbdda89231cb04bdeb7caff1c3f6e35e68c4d60c77e8c71a54a68fd68af3f&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fbounceguard%2F&secure%5Burl_type%5D=linkedin_company_website) 2 employees on LinkedIn® ### [EmailVerify - A product by TargetNXT](https://www.g2.com/es/products/emailverify-a-product-by-targetnxt/reviews) EmailVerify de TargetNXT es una herramienta de verificación de correos electrónicos que ayuda a las empresas a validar y limpiar sus listas de correos antes de ejecutar campañas. Verifica si las direcciones de correo electrónico son válidas, activas y seguras de usar, ayudando a reducir las tasas de rebote y mejorar la entregabilidad de los correos electrónicos. EmailVerify está diseñado para los equipos de marketing y ventas que desean un mejor rendimiento de las campañas y una reputación de remitente más sólida. #### Who Is the Company Behind EmailVerify - A product by TargetNXT? - **Vendedor:** [TargetNXT](https://www.g2.com/es/sellers/targetnxt) - **Ubicación de la sede:** Houston, US - **Twitter:** @TargetNXT 389 seguidores en Twitter - **Página de LinkedIn®:** [www.linkedin.com](https://www.g2.com/es/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=67a0fea2c5e545a44f8ea46399de3ab24522e5d1369e170b5cb56cc480af9e3a&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Ftargetnxt%2F&secure%5Burl_type%5D=linkedin_company_website) 24 empleados en LinkedIn® - **Teléfono:** +18002248308 ### [EvaWarm](https://www.g2.com/es/products/evawarm-evawarm/reviews) EvaWarm ofrece compromisos de usuario para su cuenta de correo electrónico a gran escala para aumentar su reputación como remitente, de modo que nunca termine en SPAM. ¿Cómo funciona? Su cuenta de correo electrónico enviará automáticamente y, a veces, manualmente (por nosotros) docenas de correos electrónicos a EvaWarm diariamente a la frecuencia adecuada. Estos correos electrónicos serán marcados como no spam e importantes, abiertos, destacados, y recibirán respuestas y serán reenviados. Además, recibirá correos electrónicos de varias cuentas. También le conseguiremos suscripciones a boletines de varias empresas y comenzará a recibir correos electrónicos de estos remitentes de renombre. Al hacerlo, la reputación de su correo electrónico, dominio e IP aumentará considerablemente y mantendrá sus correos electrónicos fuera del spam. También ofrecemos una función pionera en la industria de 'Lista blanca para su contenido promocional'. Al usar esto, podrá incluir en la lista blanca el contenido real de su campaña y obtener compromiso de usuario (incluidos clics en enlaces). Esta función le ayuda a evitar que los ISP y su campaña sean listados como "Es similar a mensajes que fueron identificados como spam en el pasado". #### Who Is the Company Behind EvaWarm? - **Vendedor:** [EvaWarm](https://www.g2.com/es/sellers/evawarm) - **Año de fundación:** 2021 - **Ubicación de la sede:** Chennai , IN - **Página de LinkedIn®:** [www.linkedin.com](https://www.g2.com/es/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=92c8eea5db568339e80bfa3a1366616d2e03267512b7482a192c1307afb4a6f7&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Feva-email-warm-up%2F&secure%5Burl_type%5D=linkedin_company_website) 5 empleados en LinkedIn® ### [Experian Email Validation](https://www.g2.com/es/products/experian-email-validation-2022-12-16/reviews) Maximice su ROI de marketing por correo electrónico con la Validación de Correo Electrónico de Experian. La Validación de Correo Electrónico de Experian asegura que sus direcciones de correo electrónico sean válidas, entregables y correctamente formateadas en tiempo real. Ideal para formularios web, carritos de comercio electrónico y sistemas CRM, verifica cada dirección de correo electrónico con los proveedores de buzones, reduciendo las tasas de rebote y protegiendo su reputación como remitente. Integre sin problemas, benefíciese de filtros avanzados y disfrute de una validación conforme y escalable con soporte 24/7. Confíe en Experian para conectarse con clientes potenciales genuinos y mejorar la efectividad de su marketing. Las direcciones de correo electrónico inexactas, falsas o dañinas no son clientes potenciales creíbles para su organización. La Validación de Correo Electrónico de Experian trabaja en tiempo real para capturar direcciones de correo electrónico genuinas en las que los equipos de Ventas y Marketing pueden confiar. El proceso de llenado de formularios puede consumir tiempo para clientes, prospectos y empleados. Elimine esto integrando la Validación de Correo Electrónico de Experian. Las direcciones de correo electrónico precisas son esenciales para llegar a las bandejas de entrada de correo electrónico. La solución de Experian le ayuda a capturar y mantener direcciones de correo electrónico genuinas y precisas para evitar la inclusión en listas negras y maximizar el ROI de la campaña. Su reputación como remitente se ve afectada al dirigirse constantemente a direcciones de correo electrónico que no existen. Las soluciones de validación y limpieza de correo electrónico de Experian cuentan con filtros avanzados de spam que verifican con los ISP en tiempo real para asegurar la validez, sin enviar un correo electrónico. #### Who Is the Company Behind Experian Email Validation? - **Vendedor:** [Experian](https://www.g2.com/es/sellers/experian) - **Año de fundación:** 1826 - **Ubicación de la sede:** Dublin, Ireland - **Twitter:** @Experian\_US 38,771 seguidores en Twitter - **Página de LinkedIn®:** [www.linkedin.com](https://www.g2.com/es/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=5f2ce141b811b45a47c23e9ebeb00646a160dd7e6e16b8de67f2a6ca6a4f4065&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fexperian&secure%5Burl_type%5D=linkedin_company_website) 26,191 empleados en LinkedIn® - **Propiedad:** LSE: EXPNL ### [Flarereach](https://www.g2.com/es/products/flarereach/reviews) FlareReach valida los correos electrónicos antes de que entren en tu sistema: no más rebotes, trampas de spam o registros falsos. Una solicitud GET devuelve: verificación de sintaxis, registros MX, verificación SMTP, detección de correos electrónicos desechables, señalización de catch-all, detección de trampas de spam y análisis completo de SPF/DKIM/DMARC. Diseñado para desarrolladores que se preocupan por la entregabilidad. Nivel gratuito disponible, respuesta en milisegundos. #### Who Is the Company Behind Flarereach? - **Vendedor:** [Flarereach](https://www.g2.com/es/sellers/flarereach) - **Ubicación de la sede:** N/A - **Página de LinkedIn®:** [www.linkedin.com](https://www.g2.com/es/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website) 1 empleados en LinkedIn® ### [LeadCop.io](https://www.g2.com/es/products/leadcop-io/reviews) LeadCop es una API y script de validación de correos electrónicos en tiempo real que detiene registros falsos, correos electrónicos desechables y tráfico de bots antes de que contaminen tu CRM. Con solo una línea de código o un plugin de WordPress, puedes asegurarte de que solo entren leads de alta calidad en tu canal, reduciendo el desperdicio de publicidad y protegiendo la entregabilidad de tus correos electrónicos. #### Who Is the Company Behind LeadCop.io? - **Vendedor:** [LeadCop](https://www.g2.com/es/sellers/leadcop) - **Ubicación de la sede:** N/A - **Página de LinkedIn®:** [www.linkedin.com](https://www.g2.com/es/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=ea0c60732f3e1cb18d1193015247901e89d42856e41d0866c1b4f1d12f832522&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fleadcop%2F&secure%5Burl_type%5D=linkedin_company_website) 1 empleados en LinkedIn® ### [MailCull](https://www.g2.com/products/mailcull/reviews) MailCull is an email verification service built for people who send real email and get blamed when a list bounces. We started it because every email validator we tried as customers gave back a one-word verdict, "valid" or "invalid," and refused to explain it. When an address we paid to verify still hard-bounced, we had nothing to show for it. So we built the tool we wished existed: one where every check is a line item, every line item is in plain English, and every verdict comes with a receipt. That receipt is the difference. For every address, MailCull returns one of four clear states, deliverable, risky, undeliverable, or unknown, along with the evidence behind it: the actual SMTP reply from the receiving server, the MX record, the reason codes, and a confidence score. A deliverable is one you can defend to a client. A risky tells you why it is risky, usually a catch-all or accept-all domain, instead of quietly marking it valid and letting it bounce at send time. You can verify a full list by uploading a CSV, or check a single address on the spot. Deep scan probes mailboxes at the SMTP level for a sharper verdict, and it is included on the free plan rather than locked behind an upgrade. An AI Analyst reads the evidence for any result and explains the conclusion in a sentence, so you do not need a deliverability background to act on it. We measure real-world accuracy honestly, in the 91 to 93 percent range, and we publish the methodology rather than claiming a round 99 percent. Pricing is deliberately simple: one flat price, a unified monthly credit pool, no per-pack math, no surprise overages, and no charge for unknowns. There is a developer API and a first-party MCP server, so verification fits into your own app or into AI tools like Claude and Cursor. MailCull is small, opinionated, and focused on one job: helping you send to addresses that actually exist, and showing you the proof. #### Who Is the Company Behind MailCull? - **Seller:** [MailCull](https://www.g2.com/sellers/mailcull) - **HQ Location:** N/A - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website) 1 employees on LinkedIn® ### [Mailerio](https://www.g2.com/products/mailerio/reviews) Mailerio is built by a couple who launched their first SaaS, Ajelix, in 2022. Over the years, they struggled with email deliverability: emails landed in spam, bounce rates exceeded thresholds, customers couldn't receive confirmation emails, and it hurt their business. So, they built an email validation tool for internal use that solved the issue, achieving an average open rate of 65% and reducing their bounce rate to 0.2%. That’s when they realized that if they had this problem, others likely did too, so they launched Mailerio for public access. #### Who Is the Company Behind Mailerio? - **Seller:** [SIA Ajelix](https://www.g2.com/sellers/sia-ajelix) - **Year Founded:** 2022 - **HQ Location:** Riga, LV - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b2c481698f19e565369e371c8b37da26dc40d8fdebb663cad59a43c60f689b44&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fajelix&secure%5Burl_type%5D=linkedin_company_website) 3 employees on LinkedIn® ### [PureChecker](https://www.g2.com/products/purechecker/reviews) PureChecker is a powerful, easy-to-use email verification and list cleaning tool designed to help marketers, businesses, and SaaS platforms improve their email deliverability. With lightning-fast bulk verification, a robust API, and seamless integrations with tools like Zapier, PureChecker ensures your emails reach real people — not invalid, disposable, or spam-trap addresses. #### Who Is the Company Behind PureChecker? - **Seller:** [PureChecker](https://www.g2.com/sellers/purechecker) - **Year Founded:** 2024 - **HQ Location:** N/A - **Twitter:** @PureChecker 2 Twitter followers - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=7886df2ed926834e5eb248c77dcfa8e5c815d3ab1f0fe3132ced0dba45868834&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2FNo-Linkedin-Presence-Added-Intentionally-By-DataOps&secure%5Burl_type%5D=linkedin_company_website) 1 employees on LinkedIn® ### [ReachStream Email Verifier](https://www.g2.com/products/reachstream-email-verifier/reviews) ReachStream Email Verifier Verify emails on the go. Protect your sender reputation. ReachStream Email Verifier keeps your outbound lists clean, accurate, and deliverable, eliminating Catch All and risky status emails before they hit your campaigns, so your team focuses on replies, not bounces. Key capabilities: • Single and bulk verification: Verify one email or Thousands in minutes • Real-time API: Verify emails inside signup forms, CRMs, and automation flows • Detailed status reports: Valid, invalid, risky and catch-all emails are clearly tagged • Sender reputation protection: Keep bounce rates low and deliverability high • Accuracy: We guarantee 99.8% accuracy on all email verifications #### Who Is the Company Behind ReachStream Email Verifier? - **Seller:** [ReachStream](https://www.g2.com/sellers/reachstream) - **Year Founded:** 2017 - **HQ Location:** Santa Clara, US - **Twitter:** @Reach\_Stream - **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=a912787d5181a0c776ac925637d9f3fa91e84aaa655c0b3c2bf03e3708313e83&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Freachstream%2F&secure%5Burl_type%5D=linkedin_company_website) 32 employees on LinkedIn® - [‹ Prev‹ Prev](/categories/email-verification/free?category_id=email-verification&order=g2_score&page=4#product-list) - [1](/categories/email-verification/free?category_id=email-verification&order=g2_score#product-list) - [2](/categories/email-verification/free?category_id=email-verification&order=g2_score&page=2#product-list) - [3](/categories/email-verification/free?category_id=email-verification&order=g2_score&page=3#product-list) - [4](/categories/email-verification/free?category_id=email-verification&order=g2_score&page=4#product-list) - 5 - [6](/categories/email-verification/free?category_id=email-verification&order=g2_score&page=6#product-list) - [Next ›Next ›](/categories/email-verification/free?category_id=email-verification&order=g2_score&page=6#product-list) Spotlight Categories [Video Editing Software](https://www.g2.com/categories/video-editing) [Background Check Software](https://www.g2.com/categories/background-check) [Low-Code Development Platforms](https://www.g2.com/categories/low-code-development-platforms) [Identity Verification Software](https://www.g2.com/categories/identity-verification) [Sales Training and Onboarding Software](https://www.g2.com/categories/sales-training-and-onboarding) Similar Categories - [Team Collaboration](/categories/team-collaboration) - [Other Collaboration](/categories/other-collaboration) - [Agentic AI Browser](/categories/agentic-ai-browser) - [AI Meeting Assistants](/categories/ai-meeting-assistants) - [AI Presentation Tools](/categories/ai-presentation-tools) - [Audio Conferencing](/categories/audio-conferencing) - [Board Management](/categories/board-management) - [Bookmark Manager](/categories/bookmark-manager) - [Browser](/categories/browsers) - [Business Scheduling](/categories/business-scheduling) - [Calendar](/categories/calendar-software) - [Cloud PBX Platforms](/categories/cloud-pbx-platforms) - [Collaborative Research Writing Tools](/categories/collaborative-research-writing-tools) - [Decision-Making](/categories/decision-making) - [Digital Adoption Platform](/categories/digital-adoption-platform) [Browse Email Verification Themes](/categories/email-verification/themes)