Tool comparison · Head to headUpdated 9/1/2026

    Overloop AI vs TheirStack

    A factual comparison of features, pricing, and capabilities.

    01The contenders
    Tool A

    Overloop AI

    Sales prospecting platform that finds verified B2B contacts and runs personalized email and social outreach campaigns. Includes a 450M+ B2B contact database, an email finder and verifier, and AI-written campaigns and follow-ups.

    Starting at$69/month
    Tool B

    TheirStack

    Job posting and technographics database for sales teams. Finds companies by the technologies they use and the roles they are hiring for, and enriches a company list with technographics and buying intent.

    Starting atCustom0
    02Line by line

    Pricing comparison.

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

    03Capabilities

    Feature comparison.

    FeatureOverloop AITheirStack
    AI-powered campaigns
    450M+ prospects database
    Verified Email Addresses
    Smart multichannel campaigns (Email + social)
    AI-powered Outreach Followups
    Email Finder & Verifier
    Chrome Extension for LinkedIn
    Conversations Inbox
    Email Warmup
    REST API
    Job search
    Company search
    Company lookup
    Enrichment
    Exports
    Email alerts
    Webhooks
    MCP server
    Available
    Partial/Limited
    Not Available
    04Ecosystem

    Native integrations.

    Overloop AI

    HubSpotSalesforcePipedriveZapierSlackCalendlyGmailOutlook

    TheirStack

    ClayLinkedIn AudiencesMakeN8NZapier
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    Information gathered from official sources and may change. Pricing and features last verified 9/1/2026. Please visit the official websites for the most current information.