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

    1CRM vs Mailcheck

    A factual comparison of features, pricing, and capabilities.

    01The contenders
    Tool A

    1CRM

    1CRM is an all-in-one CRM for small businesses that combines sales, marketing, project management, customer service, order management and a WordPress customer portal, available as 1CRM Cloud or on-premise. Editions are priced per user per month billed annually with month-to-month rates also published.

    Starting at$15/month
    Tool B

    Mailcheck

    Online email verification tool for bulk checking and list cleaning that validates emails and phones using social-network signals, with an API and per-plan monthly validation allowances plus per-email overage charges.

    Starting at$10/month
    02Line by line

    Pricing comparison.

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

    03Capabilities

    Feature comparison.

    Feature1CRMMailcheck
    Sales, marketing, project management and customer service in one CRM
    Order management
    WordPress customer portal
    Marketing automation (Lead Guerrilla)
    iPhone and Android apps
    Cloud or on-premise deployment
    Host country choice
    Online email verification tool
    Bulk check and cleaning
    Don't pay for a duplicate in the list
    API
    Case Studies
    Integrations
    Available
    Partial/Limited
    Not Available
    04Ecosystem

    Native integrations.

    1CRM

    8x8Authorize.NetChargebeeDropboxDrupalExcelGoToMeetingHubSpotJoomlaLiveChatMagentoMake

    Mailcheck

    05Keep exploring

    Explore more.

    Best 1CRM alternativesBest Mailcheck alternatives
    1CRM vs Salesforce1CRM vs HubSpot CRM1CRM vs PipedriveApollo.io vs MailcheckMailcheck vs ZoomInfoClay vs Mailcheck
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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.