Tool comparison · Head to headUpdated 9/4/2026

    Mailbutler vs Reply.io

    A factual comparison of features, pricing, and capabilities.

    01The contenders
    Tool A

    Mailbutler

    Mailbutler is an email extension for Gmail, Apple Mail and Outlook that adds email tracking, message templates, mail merge, smart follow-ups, AI compose, signatures, notes and tasks and team collaboration. Plans are per user per month billed in USD or EUR, with a free Starter plan.

    Starting atCustom0
    Tool B

    Reply.io

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

    Starting at$59/month
    02Line by line

    Pricing comparison.

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

    03Capabilities

    Feature comparison.

    FeatureMailbutlerReply.io
    Email tracking with real-time notifications
    Message templates
    Mail merge
    Smart follow-ups
    Smart compose and smart improve (AI)
    Smart timing
    Email assignments and collaborator status
    Notes and tasks
    Automations
    Signature marketing
    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
    Available
    Partial/Limited
    Not Available
    04Ecosystem

    Native integrations.

    Mailbutler

    GmailApple MailOutlook

    Reply.io

    HubSpotSalesforcePipedriveCopper CRMZendesk SellCloseZapierMaken8n
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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.