Consent, unsubscribes, topics, and suppressions

OpenSend has several related safety concepts. Use them together instead of treating them as one field.

Contacts and unsubscribes

A contact can be subscribed or unsubscribed. This controls whether marketing or audience workflows should target that contact.

Topics

Topics let recipients choose categories of mail. They are useful when someone wants product updates but not newsletters, or billing notices but not campaigns.

Suppressions

Suppressions are stronger safety records created by bounces, complaints, manual blocks, or unsubscribe workflows. The sending pipeline should treat suppressed recipients as blocked.

Recommended policy

Do not send marketing mail to unsubscribed contacts.
Do not remove complaint/bounce suppressions without evidence.
Keep transactional sends narrowly tied to account or purchase activity.
Log consent source in your application or contact properties when possible.