What is it? An email bounce occurs when an email is not delivered or rejected by the recipient's email provider. There are two types of bounces.
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A hard bounce occurs when an email address does not exist.
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A soft bounce is a temporary failure, and some more reasons, like the recipient servers being down or the mailbox being full.
Why it matters? Too many bounced emails will harm your domain reputation leading to emails going to SPAM. This is why marking hard-bounced emails as invalid is important to enable.
How to enable it? You can choose to mark emails as invalid if they bounce from within the Sub-Account Settings.
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Enabling Email Verification for the Sub-Account
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Sub-Account View > Business Profile > Scroll to the “Mark Emails as invalid due to Hard Bounce” > check box.
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