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    Tool comparison · Head to headUpdated 9/4/2026

    mailboxlayer vs OnePageCRM

    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

    OnePageCRM

    OnePageCRM is a CRM for small business built around an Action Stream that turns every contact into a next action. It stores unlimited contacts, deals, fields and tags on all plans, and adds email sync, pipelines with forecasting, automation and email sequences.

    Starting atCustom
    02Line by line

    Pricing comparison.

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

    03Capabilities

    Feature comparison.

    FeaturemailboxlayerOnePageCRM
    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
    Action Stream to manage leads from a central workspace
    Deal tracking on a Kanban board
    Unlimited Lead Enrichment & Capture
    Full Email Sync with Bulk Send
    Pipeline with Forecast View
    Automated Email Sequences
    Email Scheduling & Open Tracking
    Mobile App with AI Card Scanner
    Available
    Partial/Limited
    Not Available
    04Ecosystem

    Native integrations.

    mailboxlayer

    OnePageCRM

    GmailOutlookMailchimpMailerLiteXeroQuickBooksAircallHelp ScoutActiveCampaignApollo.io
    05Keep exploring

    Explore more.

    Best mailboxlayer alternativesBest OnePageCRM alternatives
    Apollo.io vs mailboxlayermailboxlayer vs ZoomInfoClay vs mailboxlayerOnePageCRM vs SalesforceHubSpot CRM vs OnePageCRMOnePageCRM vs Pipedrive
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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.