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Undelivered Email

Email Deliverability. A category of reasons why an email message wasn't delivered to a recipient's inbox. These reasons cover issues with the recipient's email address or the email message content.

When an email send attempt fails, one of the following happens to your email message:

  • Bounced. Recipient email server rejects an email message sent to this recipient's email address.
  • Marked as Spam. The recipient marked this email message as spam.
  • Dropped. The recipient had been added to a suppression list.
  • Set as Invalid. The recipient email address doesn't exist.