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Soft vs. Hard Bounces

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Every place a page here uses this source, in the order the words come in it.

  1. Recipient email server is down or offline. Recipient email server has been sent too many emails during a period of time. Email message is too large.

    In Bounce handling

  2. Soft bounces typically indicate a temporary delivery issue and are handled differently than hard bounces by Mailchimp. When an email address soft bounces, it will immediately display as a soft bounce in the email report. If an email address continues to soft bounce, the address will eventually be considered a hard bounce and cleaned from your audience. Mailbox is full (over limit).

    In Bounce handling

  3. The receipts for your bounces will be available in your email reports for 30 days after the email is sent. Different internet service providers (ISPs) bounce email messages based on their own rating systems and definitions. Hard bounces

    In Bounce types and SMTP codes

  4. Note To prevent your emails from bouncing, we strongly recommend authenticating your email domain and configuring DMARC. Also, if you use a free email service like Gmail or Yahoo for your From email address, we strongly recommend you switch to an email address from a private domain, like the one you use for work or for your website.

    In Bounce types and SMTP codes

  5. To prevent your emails from bouncing, we strongly recommend authenticating your email domain and configuring DMARC. Also, if you use a free email service like Gmail or Yahoo for your From email address, we strongly recommend you switch to an email address from a private domain, like the one you use for work or for your website. For more information about custom authentication and DMARC, check out About Email Domain Authentication.

    In Bounce types and SMTP codes

  6. Here are some things to know. Mailchimp can't predict if an email will bounce. The receipts for your bounces will be available in your email reports for 30 days after the email is sent.

    In Bounce types and SMTP codes

  7. Note To prevent your emails from bouncing, we strongly recommend authenticating your email domain and configuring DMARC. Also, if you use a free email service like Gmail or Yahoo for your From email address, we strongly recommend you switch to an email address from a private domain, like the one you use for work or for your website.

    In Hard-bounce suppression

  8. To prevent your emails from bouncing, we strongly recommend authenticating your email domain and configuring DMARC. Also, if you use a free email service like Gmail or Yahoo for your From email address, we strongly recommend you switch to an email address from a private domain, like the one you use for work or for your website. For more information about custom authentication and DMARC, check out About Email Domain Authentication.

    In Hard-bounce suppression