About Bounce Warnings

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If you've received a bounce warning, your bounce rate has exceeded industry thresholds established by ISPs (Internet Service Providers). Mailchimp is required to enforce these thresholds, and excessive bounce rates can hurt your marketing outcomes, so we take bounce warnings seriously.

In this article, you'll learn more about bounce warnings and steps you can take to improve your bounce rate.

Bounce warnings are meant to help you by letting you know that your audience is receiving higher than normal bounce rates without immediately suspending your account. It is important to heed these warnings and use them as an opportunity to take a step back and assess what caused your bounce rate to exceed thresholds.

View bounce warnings as a tool for maintaining and managing your audience through our system. If you start to notice a trend of hard bounce warnings through sending, it could be due to an audience that contains invalid email addresses. When you receive a warning for hard bounces, consider what improvements can be made to your audience.

Consistently exceeding industry thresholds for bounces not only means that you are not reaching your targeted audience, but you're also affecting your sending reputation through our service. Use the warnings as a cue to take action toward the health of your audience.

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