Tool comparison · Head to head

    Reply.io vs Warmbox

    A factual comparison of features, pricing, and capabilities.

    Updated 2/6/2026
    The contenders
    01
    Tool A

    Reply.io

    AI-powered sales engagement platform with 1B+ B2B contacts, multichannel sequences, and AI SDR capabilities.

    Starting at$49/month
    02
    Tool B

    Warmbox

    AI-powered email warmup tool that automates inbox warming with customizable recipes, spam score monitoring, and detailed analytics dashboards to improve cold email deliverability.

    Starting at$19/month
    Line by line

    Pricing comparison.

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

    Capabilities

    Feature comparison.

    FeatureReply.ioWarmbox
    Unlimited email warmup
    1 billion B2B contacts database
    Anti-spam & deliverability suite
    LinkedIn automation (add-on)
    SMS and calls (add-on)
    AI personalization
    AI SDR capabilities
    Multi-workspace for agencies
    14-day free trial
    Automated email warmup with AI-powered interactions
    Customizable warmup recipes and strategies
    Spam score monitoring and blacklist checks
    Real-time analytics and reporting dashboard
    DNS checker (SPF, DKIM, DMARC)
    Multi-inbox support within a single account
    Auto-reply, open, and favorite marking simulation
    Team collaboration with per-plan member limits
    Available
    Partial/Limited
    Not Available
    Ecosystem

    Native integrations.

    Reply.io

    HubSpotSalesforcePipedriveCopper CRMZendesk SellCloseZapierMaken8n

    Warmbox

    GmailGoogle WorkspaceOutlookMicrosoft 365Yahoo MailAmazon SESSMTPZoho Mail
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    Information gathered from official sources and may change. Pricing and features last verified 2/6/2026. Please visit the official websites for the most current information.