* **expunge**(<_integer_ >seqno) - Emitted when a message was expunged externally. `seqno` is the sequence number (instead of the unique UID) of the message that was expunged. If you are caching sequence numbers, all sequence numbers higher than this value **MUST** be decremented by 1 in order to stay synchronized with the server and to keep correct continuity.
* **expunge**(<_integer_ >seqno) - Emitted when a message was expunged externally. `seqno` is the sequence number (instead of the unique UID) of the message that was expunged. If you are caching sequence numbers, all sequence numbers higher than this value **MUST** be decremented by 1 in order to stay synchronized with the server and to keep correct continuity.
* **uidvalidity**(<_integer_ >uidvalidity) - Emitted if the UID validity value for the currently open mailbox changes during the current session.