| limit | integer | — | Number of results to return per page. |
| offset | integer | — | Number of results to skip before returning results. |
| search | string | — | Search term to filter results by `id`, `subject`, `first_name`, `last_name`, `email`, and `mobile_number`. |
| ordering | string | — | Field to order results by (`id`, `created_at`, `updated_at`, `viewed`, `viewed_at`, `subject`) |
| is_viewed | boolean | — | Filter by viewed status (`true` for viewed, `false` for not viewed). |
| viewed_date | string | — | Exact viewed date (`YYYY-MM-DD`). |
| viewed_date_from | string | — | Start date for contacts viewed after this date (`YYYY-MM-DD`). |
| viewed_date_to | string | — | End date for contacts viewed before this date (`YYYY-MM-DD`). |
| has_message | boolean | — | Filter by contacts that have a message (`true` for contacts with a message, `false` for those without). |
| has_mobile_number | boolean | — | Filter by contacts that have a mobile number (`true` for contacts with a mobile number, `false` for those without). |
| has_email | boolean | — | Filter by contacts that have an email address (`true` for contacts with an email, `false` for those without). |
| has_first_name | boolean | — | Filter by contacts that have a first name (`true` for contacts with a first name, `false` for those without). |
| has_last_name | boolean | — | Filter by contacts that have a last name (`true` for contacts with a last name, `false` for those without). |
| id_min | integer | — | Minimum ID of the contact. |
| id_max | integer | — | Maximum ID of the contact. |
| created_date | string | — | Exact creation date (`YYYY-MM-DD`). |
| updated_date | string | — | Exact last update date (`YYYY-MM-DD`). |
| created_from | string | — | Start date for contacts created after this date (`YYYY-MM-DD`). |
| updated_from | string | — | Start date for contacts updated after this date (`YYYY-MM-DD`). |
| created_to | string | — | End date for contacts created before this date (`YYYY-MM-DD`). |
| updated_to | string | — | End date for contacts updated before this date (`YYYY-MM-DD`). |