* **mail**(<_integer_ >numNewMsgs) - Emitted when new mail arrives in the currently open mailbox.
* **deleted**(<_integer_ >seqno) - Emitted when a message is deleted from another IMAP connection's session. `seqno` is the sequence number (instead of the unique UID) of the message that was deleted. 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.