Spam Complaint Rate

Metrics > Spam Complaint Rate

Spam Complaint Rate

Definition: Percentage of email recipients who marked an email as spam.

Formula:
(Spam Complaints / Emails Delivered) × 100

Why It Matters:
A high spam complaint rate negatively impacts email deliverability and sender reputation.

How to Improve:
Relevant Integrations:

Example Calculation:

If 10,000 emails were sent and 50 people marked it as spam, then:

Spam Complaint Rate = (50 / 10000)×100 = 0.5%