Which metric is the measure of emails rejected by a server due to permanent conditions such as “user unknown” or “domain not found”?
A. Soft Bounce
B. Validation Error
C. Unsubscribed
D. Hard Bounce
Which metric is the measure of emails rejected by a server due to permanent conditions such as “user unknown” or “domain not found”?
A. Soft Bounce
B. Validation Error
C. Unsubscribed
D. Hard Bounce