# Update Contact List

Update a specific contact list by changing its name and / or deletion status. Using PUT you can delete lists, as well as reinstate previously deleted ones. To obtain a valid list_ID, first call GET /v3/REST/contactslist to list your contact lists.

Endpoint: PUT /v3/REST/contactslist/{list_ID}
Version: 1.0.0
Security: basicAuth

## Path parameters:

  - `list_ID` (integer, required)
    Unique numeric ID assigned to this contact list.
    Example: 2000

## Request fields (application/json):

  - `IsDeleted` (boolean)
    When true, the contact list will be marked as Deleted. Deleted lists can later be reinstated by updating this value to False.

  - `Name` (string)
    User-specified name for this contact list (must be unique).

## Response 200 fields (application/json):

  - `Count` (integer)
    Indicates the number of objects in the Data array.

  - `Data` (array)
    A JSON array containing a list of objects returned by this endpoint.

  - `Data.Address` (string)
    Unique email address generated by Mailjet, which can be used only via Mailjet's SMTP server to reach all contacts in the list. The full address will be {address}@lists.mailjet.com.

  - `Data.CreatedAt` (string)
    Timestamp of when the contact list was created.

  - `Data.ID` (integer)
    Unique numeric ID assigned to this contact list.

  - `Data.SubscriberCount` (integer)
    Number of contacts registered in this contact list. Includes contacts that were unsubscribed from the list, as well as excluded ones.

  - `Data.IsDeleted` (boolean)
    When true, the contact list will be marked as Deleted. Deleted lists can later be reinstated by updating this value to False.

  - `Data.Name` (string)
    User-specified name for this contact list (must be unique).

  - `Total` (integer)
    Indicates the number of objects in the Data array.


## Response 400 fields

## Response 401 fields

## Response 403 fields

## Response 404 fields

## Response 429 fields

## Response 500 fields