Add a suppression

Suppress an address: no email is sent to it until it is removed. Adding an address already suppressed answers its existing entry.

List suppressions

List the organization's suppressed addresses, newest first, optionally only those of one origin.

Add suppressions in bulk

Suppress up to 100 addresses at once. The batch is validated as a whole: one invalid address refuses it and nothing is written. An address already suppressed keeps its entry.