How do ESP-level suppressions protect reputation?

ESPs maintain platform-wide suppression lists that protect shared infrastructure:

Global bounce lists prevent all customers from mailing addresses that consistently reject mail, reducing bounce rates across the platform.

Complaint suppressions remove addresses that complained about any customer, preventing repeat complaints that damage pool reputation.

Spamtrap lists block known trap addresses from receiving mail from any sender on the platform.

Compliance violations suppress addresses involved in abuse reports regardless of which customer originally added them.

These global protections benefit all customers by maintaining healthy shared infrastructure.

ESP suppressions are like harbor-wide quarantine lists. Addresses known to cause problems for any ship are flagged so no vessel delivers to them, protecting the entire fleet.