Part of lp.registry.interfaces
| Interface | IMailingListApplication | Mailing lists application root. |
| Class | MailingListStatus | Team mailing list status. |
| Class | PostedMessageStatus | The status of a posted message. |
| Interface | IMailingList | A mailing list. |
| Interface | IMailingListSet | A set of mailing lists. |
| Interface | IMailingListAPIView | XMLRPC API that Mailman polls for mailing list actions. |
| Interface | IMailingListSubscription | A mailing list subscription. |
| Interface | IMessageApproval | A held message. |
| Interface | IMessageApprovalSet | Sets of held message. |
| Interface | IHeldMessageDetails | Details on a held message. |
| Class | BaseSubscriptionErrors | Base class for subscription exceptions. |
| Class | CannotSubscribe | The subscriber is not allowed to subscribe to the mailing list. |
| Class | CannotUnsubscribe | The person cannot unsubscribe from the mailing list. |
| Class | CannotChangeSubscription | The subscription change cannot be fulfilled. |
| Class | UnsafeToPurge | It is not safe to purge this mailing list. |