Question: Which of the following is NOT a hard bounce category in HubSpot’s system?
- Mailbox full
- Unknown user
- Content
- Legal
Explanation
HubSpot classifies a hard bounce as a permanent delivery error or a rejection caused by a strict email security filter. HubSpot’s hard bounce categories include Mailbox full, Unknown user, Content, Spam, Policy, and Other. Legal is not listed as a HubSpot hard bounce category. Legal restrictions appear in HubSpot as not-sent or consent-related issues rather than hard bounce reasons.
Why the other options are incorrect
Mailbox full is a HubSpot hard bounce category when the inbox is inactive or over quota for a long time.
Unknown user is a HubSpot hard bounce category for an invalid email address.
Content is a HubSpot hard bounce category when the email body or subject triggers filtering.
Source for verification
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