> For the complete documentation index, see [llms.txt](https://docs.mailtrap.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mailtrap.io/developers/email-marketing/contacts/bulk-import/import-contacts.md).

# Import contacts

Import contacts in bulk with support for custom fields and list management. Existing contacts with matching email addresses will be updated automatically. You can import up to 50,000 contacts per request. The import process runs asynchronously - use the returned import ID to check the status and results.

```json
{"openapi":"3.1.0","info":{"title":"Contacts","version":"2.0.0"},"tags":[{"name":"Bulk Import","description":"Manage contact import jobs"}],"servers":[{"description":"Mailtrap API","url":"https://mailtrap.io"}],"security":[{"HeaderAuth":[]},{"BearerAuth":[]}],"components":{"securitySchemes":{"HeaderAuth":{"type":"apiKey","description":"Pass the API token in the Api-Token","in":"header","name":"Api-Token"},"BearerAuth":{"type":"http","scheme":"bearer","bearerFormat":"JWT"}},"schemas":{"ContactImportRequest":{"title":"Contact Import Request","type":"object","properties":{"contacts":{"type":"array","items":{"type":"object","properties":{"email":{"type":"string"},"fields":{"type":"object","description":"Object of fields in the following format:\n  field_merge_tag: string | integer | float | boolean | date string in ISO-8601 format (yyyy-mm-dd);"},"list_ids_included":{"type":"array","items":{"type":"integer"}},"list_ids_excluded":{"type":"array","items":{"type":"integer"}}}}}}},"ContactImport":{"type":"object","properties":{"id":{"type":"integer"},"status":{"type":"string","enum":["created","started","finished","failed"]},"created_contacts_count":{"type":"integer","description":"_optional_, provided only if __status__ is `finished`"},"updated_contacts_count":{"type":"integer","description":"_optional_, provided only if __status__ is `finished`"},"contacts_over_limit_count":{"type":"integer","description":"_optional_, provided only if __status__ is `finished`"}}},"UnauthenticatedResponse":{"title":"UnauthenticatedResponse","type":"object","properties":{"error":{"type":"string","description":"Error message"}}},"PermissionsDeniedResponse":{"title":"PermissionsDeniedResponse","type":"object","properties":{"errors":{"type":"string"}}},"ContactImportErrors":{"title":"UnprocessableEntity","type":"object","properties":{"errors":{"type":"array","items":{"type":"object","properties":{"email":{"type":"string"},"errors":{"type":"object","properties":{"base":{"type":"array","items":{"type":"string"}},"email":{"type":"array","items":{"type":"string"}},"fields":{"type":"array","items":{"type":"string"}},"field_merge_tag":{"type":"array","items":{"type":"string"}}}}}}}}},"ErrorResponse":{"title":"ErrorResponse","type":"object","properties":{"errors":{"type":"string","description":"Error message"}}}},"responses":{"UNAUTHENTICATED":{"description":"Returns unauthorized error message. Check your credentials.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/UnauthenticatedResponse"}}}},"PERMISSION_DENIED":{"description":"Returns forbidden error message. Check your permissions.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/PermissionsDeniedResponse"}}}},"INTERNAL_ERROR":{"description":"Internal error. Retry later or contact support.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ErrorResponse"}}}}}},"paths":{"/api/contacts/imports":{"post":{"description":"Import contacts in bulk with support for custom fields and list management. Existing contacts with matching email addresses will be updated automatically. You can import up to 50,000 contacts per request. The import process runs asynchronously - use the returned import ID to check the status and results.","operationId":"importContacts","summary":"Import contacts","tags":["Bulk Import"],"requestBody":{"content":{"application/json":{"schema":{"$ref":"#/components/schemas/ContactImportRequest"}}}},"responses":{"201":{"description":"Contact Import created successfully.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ContactImport"}}}},"401":{"$ref":"#/components/responses/UNAUTHENTICATED"},"403":{"$ref":"#/components/responses/PERMISSION_DENIED"},"422":{"description":"Returns validation errors.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/ContactImportErrors"}}}},"500":{"$ref":"#/components/responses/INTERNAL_ERROR"}}}}}}
```


---

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