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

    Right Inbox vs Success.ai

    A factual comparison of features, pricing, and capabilities.

    01The contenders
    Tool A

    Right Inbox

    Right Inbox is a Gmail extension for Chrome, Safari and Firefox that adds email tracking, mail merge, email sequences, recurring emails, reminders, templates, send later and signatures inside Gmail. Plans are per user per month with a free Limited tier.

    Starting atCustom0
    Tool B

    Success.ai

    Cold email outreach platform with unlimited email sending accounts, unlimited warmup, a unified inbox and a 700M+ contact B2B database. AI operators write campaigns and draft replies, and a token balance meters data reveals, enrichment and AI actions.

    Starting at$49/month
    02Line by line

    Pricing comparison.

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

    03Capabilities

    Feature comparison.

    FeatureRight InboxSuccess.ai
    Email Tracking
    Mail Merge
    Email Sequences
    CRM Integration
    Recurring Emails
    Reminders
    Private Notes
    Templates
    Send Later
    Signatures
    AI Sales & Reply Operators
    700M+ database with unlimited look-ups
    Unified InboxHub
    Data enrichment & email verification built in
    unlimited warm-up
    advanced search filters
    advanced deliverability
    Website Visitor identification
    5 deal pipelines
    Available
    Partial/Limited
    Not Available
    04Ecosystem

    Native integrations.

    Right Inbox

    GmailChromeSafariFirefox

    Success.ai

    ZapierHubSpotSalesforcePipedriveSlack
    05Keep exploring

    Explore more.

    Best Right Inbox alternativesBest Success.ai alternatives
    Instantly vs Right InboxRight Inbox vs SmartleadLemlist vs Right InboxInstantly vs Success.aiSmartlead vs Success.aiLemlist vs Success.ai
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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.