* **delLabels**(<_mixed_ >source, <_mixed_ >labels, <_function_ >callback) - _(void)_ - Removes `labels` from message(s). `source` can be a message UID, a message UID range (e.g. '2504:2507' or '\*' or '2504:\*'), or an _array_ of message UIDs and/or message UID ranges. `labels` is either a single label or an _array_ of labels. `callback` has 1 parameter: <_Error_ >err.
* **Sort**
* **RFC5256**
* Server capability: SORT
@ -618,7 +618,13 @@ Extensions Supported
* 'SUBJECT' - Base subject text.
* 'TO' - The mailbox of the **first** "to" address.
* **Extended Search**
* Server capability: THREAD=REFERENCES, THREAD=ORDEREDSUBJECT
* **thread**(<_string_ >algorithm, <_array_ >searchCriteria, <_function_ >callback) - _(void)_ - Performs a regular search with `searchCriteria` and groups the resulting search results using the given `algorithm` (e.g. 'references', 'orderedsubject'). `callback` has 2 parameters: <_Error_ >err, <_array_ >UIDs. `UIDs` is a nested array.
* **RFC4731**
* Server capability: ESEARCH
@ -633,7 +639,7 @@ Extensions Supported
**Note:** specifying no `options` or [] for `options` is the same as ['ALL']
* **Quota**
* **RFC2087**
* Server capability: QUOTA
@ -673,4 +679,3 @@ Several things not yet implemented in no particular order: