13 Tips to Avoid Spam Filters and Get Maximum Email Deliverability Rates

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  1. Great article

    What do you exactly consider by inactive subscriber? The one who haven’t opened last 10, 20, X campaigns?

    • ringo

      From our experience, someone who hasn’t opened your last 8 emails, won’t open your future emails as well. The number can vary depending on how often you send emails, but this seems like the right rule of thumb.

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