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    Deliverability

    Spam Complaint Rate

    By Carlos Gil, Founder & Editor, The Best Network · Updated

    The percentage of recipients who clicked "report spam" instead of unsubscribing.

    Google asks senders to keep the user-reported spam rate below 0.1% and never reach 0.3%. A common cause of complaints is people not remembering they signed up, so a clear welcome email and a consistent sending cadence help.

    Related terms

    Sender Reputation

    A score inbox providers assign to your sending domain and IP based on engagement, complaints, and bounces.

    Unsubscribe Rate

    The percentage of recipients who unsubscribe from a given campaign.