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Best Email Validation Software in 2026

Email validation software helps check email addresses before you use them. This list is for budget-conscious readers comparing tools for an API, web service or browser extension.

  1. 1

    APILayer Marketplace

    Free plan APIWeb

    APILayer Marketplace centralizes API discovery, trials, documentation, and subscription management. Review each API's limits and subscription before relying on it for a workload.

    7.4 Free plan Visit site
  2. 2

    Clearout Email Verification

    Free plan APIExtensionWeb

    Clearout provides several ways to check email addresses, from a single entry to bulk lists and API workflows.

    7.4 Free plan · paid from $16/mo (annual) Visit site
  3. 3

    DeBounce

    Free plan APIWeb

    DeBounce covers bulk and real-time email checks, with integrations and list monitoring for ongoing validation.

    7.2 Free plan · paid from $0.00 Visit site
  4. 4

    Hunter

    by Hunter
    Free plan APIExtensionWeb

    Hunter brings email discovery, lead finding, verification, and outreach together, with API and integration options. Check the Free plan’s credit and export limits against your expected use.

    7.2 Free plan Visit site
  5. 5

    Emailable

    Free plan APIWeb

    Emailable supports list processing, real-time form checks, and developer access, with additional deliverability monitoring.

    7.1 From $38 Visit site
  6. 6

    MailboxValidator

    Free plan APIWeb

    MailboxValidator offers both API and bulk-list checking, with a wide set of validation checks and integrations.

    6.9 30-day trial Visit site
  7. 7

    Proofy

    Free plan APIWeb

    Proofy combines one-off checks, bulk verification, API workflows, and form integrations.

    6.7 From $5 Visit site
  8. 8

    QuickEmailVerification

    Free plan APIWeb

    QuickEmailVerification offers list processing, real-time checks, and batch API workflows. The free tier resets daily, while its 500-credit Pay As You Go option is a one-time 4.00 USD purchase.

    6.7 Free plan · paid from $4 Visit site
  9. 9

    XVerify

    Free plan APIWeb

    Choose XVerify if you need email, phone and address checks alongside bulk uploads, form checks or blacklist monitoring.

    6.6 From $5 Visit site
  10. 10

    CaptainVerify

    Free trial APIWeb

    CaptainVerify offers email and mobile verification through bulk files, forms, and an API.

    6.2 From $7 Visit site
  11. 11

    Email Hippo

    Free trial APIWeb

    Email Hippo combines bulk verification, real-time API checks, intelligence, and fraud signals. Its paid plans and non-rolling credits make volume planning important.

    6.0 From $9.88/mo Visit site
  12. 12

    Kickbox

    by Kickbox
    Free plan
    5.8 Visit site
  13. 13

    NeverBounce

    by NeverBounce
    Free plan
    5.7 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare pricing models, listed starting prices, free plans and free trials. If you need to read or change code, check the licence to see whether it is open source, and review plan terms before choosing.

Questions

Are free email validation tools listed?

Yes. Kickbox is marked free, and tools such as APILayer Marketplace, DeBounce and Clearout Email Verification list free plans.

Is there a free trial?

MailboxValidator lists a 30-day trial. A free trial and a free plan are different offers, so check the terms for the tool you are considering.

What platforms do these tools support?

The listed platforms are API, web and extension. Check the platform label to match the tool with your workflow.

What does email validation software cost?

Listed notes range from free plans to paid starting prices such as $4 for QuickEmailVerification, $5 for Proofy and $7 for CaptainVerify.

How should I check open-source status?

Review the tool's licence. If you need to read or change the code, confirm that the licence permits it and is open source.

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