curl\_mime\_addpart(3) Library Functions Manual curl\_mime\_addpart(3)

# [NAME](#NAME)

curl\_mime\_addpart - append a new empty part to a mime structure

# [SYNOPSIS](#SYNOPSIS)

```
#include <curl/curl.h>
curl_mimepart *curl_mime_addpart(curl_mime *mime);
```

# [DESCRIPTION](#DESCRIPTION)

[*curl\_mime\_addpart(3)*](/man/os/curl/curl_mime_addpart.3) creates and appends a new empty part to the given mime structure and returns a handle to it. The returned part handle can subsequently be populated using functions from the mime API.

*mime* is the handle of the mime structure in which the new part must be appended.

# [PROTOCOLS](#PROTOCOLS)

This functionality affects http, imap and smtp

# [EXAMPLE](#EXAMPLE)

```
int main(void)
{


  curl_mime *mime;


  curl_mimepart *part;


  CURL *curl = curl_easy_init();


  if(curl) {


    /* create a mime handle */


    mime = curl_mime_init(curl);


    /* add a part */


    part = curl_mime_addpart(mime);


    /* continue and set name + data to the part */


    curl_mime_data(part, "This is the field data", CURL_ZERO_TERMINATED);


    curl_mime_name(part, "data");


  }
}
```

# [AVAILABILITY](#AVAILABILITY)

Added in curl 7.56.0

# [RETURN VALUE](#RETURN_VALUE)

A mime part structure handle, or NULL upon failure.

# [SEE ALSO](#SEE_ALSO)

[**curl\_mime\_data**(3)](/man/os/curl/curl_mime_data.3), [**curl\_mime\_data\_cb**(3)](/man/os/curl/curl_mime_data_cb.3), [**curl\_mime\_encoder**(3)](/man/os/curl/curl_mime_encoder.3), [**curl\_mime\_filedata**(3)](/man/os/curl/curl_mime_filedata.3), [**curl\_mime\_filename**(3)](/man/os/curl/curl_mime_filename.3), [**curl\_mime\_headers**(3)](/man/os/curl/curl_mime_headers.3), [**curl\_mime\_init**(3)](/man/os/curl/curl_mime_init.3), [**curl\_mime\_name**(3)](/man/os/curl/curl_mime_name.3), [**curl\_mime\_subparts**(3)](/man/os/curl/curl_mime_subparts.3), [**curl\_mime\_type**(3)](/man/os/curl/curl_mime_type.3)

2026-10-22 libcurl

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Document: curl_mime_addpart(3) from curl 8.23.0-r2 (Chainguard OS)
Source: https://github.com/curl/curl.git