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ToolGPA

mailboxlayer vs NeverBounce (2026): which should you pick?

As of Nov 12, 2026, NeverBounce grades higher than mailboxlayer: 2.4 against 1.8 out of 4.0.

Checked Oct 18, 2026 and Nov 12, 2026 · graded Oct 18, 2026 and Nov 12, 2026 by ToolGPA

NeverBounce grades higher on ease of use and platforms. They get the same grade on value for money, the free plan and features.

Price, platforms and features side by side. The table says where each price was read and when.

mailboxlayer

Email validation API that returns a JSON quality score

Free plan · from $14.99/mo
Full detailsmailboxlayer.com

NeverBounce

Email list cleaning and real-time verification, now part of ZoomInfo

Free trial · from $8 one-time
Full detailsneverbounce.com

Which one is for you

Pick mailboxlayer if

  • Fits if you are a developer who wants to check addresses at sign-up
  • Works for side projects that stay under 100 requests a month

Look elsewhere if

  • Not for you if you want to upload a list, because there is only an API
  • Tight if you stay free, with 100 non-commercial requests
  • Pricey if you want bulk: it starts at $74.99 a month
  • Watch out: the homepage text mentions 1,000 free requests and $9.99 plans that the pricing page does not show
  • Watch out: every address counts as one request

Pick NeverBounce if

  • Fits if you want a CRM or email platform rechecked without uploading anything, from $49 a month
  • Works for sign-up forms that let through typos like gmai for gmail

Look elsewhere if

  • Skip it if you clean once a year, as pay-as-you-go credits expire after 12 months
  • Pricey if you want Sync or AI scoring, which need the $49 a month Growth plan
  • Not for you if you need warm-up, inbox placement tests or DMARC tools as well
  • Tight if you want to try it on a full list, as only test credits and a list analysis are free

How we grade them

1.8GPAmailboxlayerWeak2.4GPANeverBounceFair
Value for money
CBasic is $14.99 a month for 5,000 requests, between the $10 cheaper quarter and the $17.99 middle. Professional Plus is $74.99 and Enterprise Plus $249.99, all billed monthly with yearly at a discount.
C$50 for a one-off 10,000 checks. Among its listed rivals that's under Bouncer and Emailable ($60) and Kickbox ($70), but DeBounce charges $25. And the credits expire 12 months after purchase, where Bouncer's, Emailable's and DeBounce's never do.
Free plan and trial
CFree is 100 API requests, non-commercial, with no support and no catch-all detection. Commercial use needs Basic.
CNo free plan, but free test credits and a free analysis of your list, with no card. That shows how messy a list is; it won't clean it.
Features
CSyntax, SMTP, disposable and role checks with a score. No list upload exists, and catch-all detection and bulk need paid plans.
CIt does the checking job fully: bulk cleaning, a real-time API, typo fixes, the company behind each address and automatic Sync. That's a smaller job, though: no warm-up, placement tests or DMARC, and Sync and AI scoring need Growth.
Ease of use
DNo store rating on record. It is an API only, so you need code to use it.
BNo App Store rating on record, but nothing to set up: upload a list and get results, with up to 10 lists cleaning at once on pay-as-you-go.
Platforms and integrations
CWeb API only. No apps and no integrations are listed.
BWeb and an API, with HubSpot, Mailchimp, Zapier, n8n, Marketo, Oracle Eloqua, Constant Contact and AWeber. No phone or desktop app.
Best foran email check API for developerskeeping a CRM's contacts checked automatically

The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: mailboxlayer and NeverBounce. How we grade

Where they differ

    In commonWebPublic APIEmail verification

    At a glance

    mailboxlayerNeverBounce
    PricingFree planFree trial
    Starts at$14.99 per month for 5,000 requests$8 one-time for 1,000 credits
    Free plan100 API requests, for non-commercial use only.None
    Free trialNone listedFree test credits and a free list analysis, no credit card required
    Web
    Made byAPILayerZoomInfo Technologies LLC
    Price read frommailboxlayer.comneverbounce.com
    CheckedNov 12, 2026Oct 18, 2026

    Worth knowing

    mailboxlayer

    • An API only: there is no list upload or bulk cleaning page, and the bulk endpoint starts at Professional Plus.
    • The free plan is 100 requests and non-commercial; the homepage text mentions 1,000 free monthly requests and subscriptions from $9.99, which the pricing page does not show.
    • Each address checked counts as one API request; overage is listed as a per-request charge on the pricing page.
    • Yearly billing is discounted by 10% to 15% depending on the plan.

    NeverBounce

    • Pay-as-you-go credits expire 12 months after purchase.
    • NeverBounce only verifies addresses; it has no warm-up, inbox placement or DMARC tools.
    • Automatic syncing and AI scoring need the $49 a month Growth plan.

    Key features

    mailboxlayer

    Syntax and typo check
    Validates format and returns a did-you-mean suggestion for common typos.
    Real-time SMTP check
    Pings the address's mail server and tests it for catch-all configuration; catch-all detection is not in the free plan.
    Free and disposable filters
    A daily-updated provider database flags addresses at free providers such as Gmail and at disposable ones such as Mailinator.
    Role detection
    Flags role addresses that map to a function instead of a person.
    Quality score
    Each response includes a numeric score for the address's quality and deliverability.
    Usage statistics
    Daily and monthly request counts, with notifications when a plan's allowance runs low.

    NeverBounce

    Bulk list cleaning
    Upload a list for results in one go; pay-as-you-go accounts can clean up to 10 lists at once, and Growth any number in parallel.
    Real-time verification API
    Checks addresses as they arrive from sign-up forms or apps, and fixes common typos such as gmai for gmail.
    Sync
    Connects to a CRM or email platform and keeps its contacts verified automatically, charging only for new, unique addresses.
    Company data
    Returns the company name behind each business address, and Growth adds AI scoring of how likely a contact is to convert.
    GTM Guard
    Checks contacts before they reach AI agents and automated workflows, with n8n workflow blueprints for building them.

    Plans

    mailboxlayer

    • Free$0

      100 API requests, non-commercial use, no support, no catch-all detection.

    • Basic$14.99

      per month for 5,000 requests, billed monthly

      Commercial use, standard support and catch-all detection. Yearly billing is $161.99.

    • Professional Plus$74.99

      per month for 50,000 requests, billed monthly

      Adds a bulk endpoint that takes 25 emails at a time. Yearly billing is $787.99.

    • Enterprise Plus$249.99

      per month for 250,000 requests, billed monthly

      Bulk endpoint of 100 emails per call. Yearly billing is $2,549.99.

    • CustomCustom

      Unlimited requests and dedicated support, quoted by the vendor.

    NeverBounce

    • Pay as you go$8

      one-time for 1,000 credits

      Credits last 12 months. Bulk rates in the page's volume menu: $50 for 10,000, $400 for 100,000 and $2,500 for 1 million.

    • Growth$49

      per month for up to 10,000 emails

      Automatic CRM sync charged only for new unique emails, AI scoring and 200 AI-picked leads a month. $159 a month at 100,000 emails in the page's menu.

    • EnterpriseCustom

      Typically 250,000+ emails a month, with unlimited use across teams, advanced security and compliance, and an account manager.

    Ways to pay less

    mailboxlayer

    • Annual discount

      Save 10% to 15% with yearly billing

      The pricing page shows yearly totals with discounts of 10% (Basic), 12.5% (Professional Plus) and 15% (Enterprise Plus).

    NeverBounce

    • Nonprofit

      Nonprofit discounts on request

      NeverBounce's pricing FAQ says nonprofits can get discounted verification by applying through its nonprofit pricing page.

    Common questions

    Which is cheaper, mailboxlayer or NeverBounce?

    As of Nov 12, 2026, mailboxlayer starts at $14.99 per month for 5,000 requests, and NeverBounce starts at $8 one-time for 1,000 credits.

    Which has a free plan, mailboxlayer or NeverBounce?

    As of Nov 12, 2026, only mailboxlayer has a free plan. NeverBounce does not, though it has a free trial.

    More comparisons

    How this page was made

    • The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
    • The grades are our own, from each tool’s review or report card. The GPA is their average.
    • Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
    • The differences and the answers to the questions are worked out from those listings.
    How we review and grade