Tool comparison · Head to headUpdated 9/4/2026

    BuiltWith vs mailboxlayer

    A factual comparison of features, pricing, and capabilities.

    01The contenders
    Tool A

    BuiltWith

    BuiltWith is a web technology profiler and lead generation tool that reports which technologies websites use and builds lead lists of companies by technology, spend and lifecycle signals. Individual site lookups are free; paid plans add technology reports, keyword reports and CRM integration.

    Starting atCustom0
    Tool B

    mailboxlayer

    mailboxlayer is an email verification API (an apilayer product) with syntax and typo checks, real-time SMTP and MX-record verification, catch-all detection, free and disposable provider databases and a quality score. Plans are monthly API request allowances.

    Starting atCustom0
    02Line by line

    Pricing comparison.

    Monthly rates shown. Annual billing may offer discounts. Visit official sites for current pricing.

    03Capabilities

    Feature comparison.

    FeatureBuiltWithmailboxlayer
    Technology lookups for individual sites
    Lead lists by technology
    Keyword reports
    Retail reports
    Trends and technology history
    Predictive leads
    Advanced lookup of historical technology use
    Report prioritization by spend, technology use and location
    Unlimited report download
    Syntax and typo check
    Free and disposable provider databases
    Real-time SMTP verification
    MX-records check
    Catch-all detection
    Quality score
    Bulk endpoint
    256-bit HTTPS encryption
    Available
    Partial/Limited
    Not Available
    04Ecosystem

    Native integrations.

    BuiltWith

    PardotZoho CRMClose.ioHubSpot

    mailboxlayer

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    Information gathered from official sources and may change. Pricing and features last verified 9/4/2026. Please visit the official websites for the most current information.