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    All tool comparisons
    Tool comparison · Head to headUpdated 9/4/2026

    mailboxlayer vs Twenty

    A factual comparison of features, pricing, and capabilities.

    01The contenders
    Tool A

    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
    Tool B

    Twenty

    Twenty is an open source CRM with full customization, AI agents with custom skills, workflows and email and calendar sync, offered as a hosted product priced per user per month. An Enterprise tier is quoted per year.

    Starting at$9/month
    02Line by line

    Pricing comparison.

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

    03Capabilities

    Feature comparison.

    FeaturemailboxlayerTwenty
    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
    Full customization
    AI agents with custom skills
    Workflows
    Emails and calendar sync
    Folder and label import
    Email sharing
    Two-factor authentication
    User roles and field-level permissions
    Available
    Partial/Limited
    Not Available
    04Ecosystem

    Native integrations.

    mailboxlayer

    Twenty

    05Keep exploring

    Explore more.

    Best mailboxlayer alternativesBest Twenty alternatives
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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.