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POST
/
v1
/
contact-lists
/
{id}
/
merge
Merge contact lists
curl --request POST \
  --url https://client-api.salesfinity.co/v1/contact-lists/{id}/merge \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "source_list_ids": [
    "507f1f77bcf86cd799439011",
    "507f1f77bcf86cd799439012"
  ],
  "delete_sources": false
}
'
{
  "_id": "<string>",
  "name": "<string>",
  "source": "csv",
  "user": {
    "_id": "<string>",
    "email": "<string>",
    "first_name": "<string>",
    "last_name": "<string>"
  },
  "total_contacts": 123
}
Merges contacts from one or more source lists into a target list. Optionally deletes the source lists after merging. This is useful when payload limits require creating multiple sub-lists that should logically be one list. Instead of leaving SDRs with fragmented lists in the dialer, merge them server-side into a single clean list.

​
Path Parameters

  • id (required, string): Target contact list ID to merge into.

​
Request Body

FieldTypeRequiredDescription
source_list_idsstring[]YesIDs of the source lists to merge into the target (1–20 lists)
delete_sourcesbooleanNoWhether to delete the source lists after merging. Default: false

​
Limits

  • Max 20 source lists per merge request
  • The target list cannot appear in source_list_ids (it will be ignored)

​
Example Request

{
  "source_list_ids": [
    "507f1f77bcf86cd799439011",
    "507f1f77bcf86cd799439012",
    "507f1f77bcf86cd799439013"
  ],
  "delete_sources": true
}

​
Response (201)

Returns the updated target contact list.

​
Errors

StatusDescription
404Target contact list not found

Authorizations

​
x-api-key
string
header
required

Path Parameters

​
id
string
required

Target contact list ID to merge into

Example:

"507f1f77bcf86cd799439011"

Body

application/json
​
source_list_ids
string[]
required

IDs of the source lists to merge into the target list

Required array length: 1 - 20 elements
Example:
[
  "507f1f77bcf86cd799439011",
  "507f1f77bcf86cd799439012"
]
​
delete_sources
boolean
default:false

Whether to delete the source lists after merging

Response

Lists merged successfully

​
_id
string
required

Unique identifier

​
name
string
required

Contact list name

​
source
enum<string>
required

List source

Available options:
csv,
hubspot,
salesforce,
manual
​
user
object
​
total_contacts
integer

Number of contacts