---
name: "CURLOPT_MAIL_RCPT_ALLOWFAILS"
section: "3"
platform: "macos"
package: "curl"
version: "166.0.0.0.1"
release: "macOS 26.5"
platforms: ["linux", "macos"]
url: "https://new.carta.tech/CURLOPT_MAIL_RCPT_ALLOWFAILS"
---

# CURLOPT\_MAIL\_RCPT\_ALLOWFAILS(3)

allow RCPT TO command to fail for some recipients

## NAME

CURLOPT\_MAIL\_RCPT\_ALLOWFAILS - allow RCPT TO command to fail for some recipients

## SYNOPSIS

```
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAIL_RCPT_ALLOWFAILS,
                          long allow);
```

## DESCRIPTION

If *allow* is set to 1L, allow RCPT TO command to fail for some recipients.

When sending data to multiple recipients, by default curl aborts the SMTP conversation if either one of the recipients causes the RCPT TO command to return an error.

The default behavior can be changed by setting *allow* to 1L which makes libcurl ignore errors for individual recipients and proceed with the remaining accepted recipients.

If all recipients trigger RCPT TO failures and this flag is specified, curl aborts the SMTP conversation and returns the error received from to the last RCPT TO command.

## DEFAULT

0

## PROTOCOLS

SMTP

## EXAMPLE

```
int main(void)
{
  CURL *curl = curl_easy_init();
  if(curl) {
    struct curl_slist *list;
    CURLcode res;
    /* Adding one valid and one invalid email address */
    list = curl_slist_append(NULL, "person@example.com");
    list = curl_slist_append(list, "invalidemailaddress");
    curl_easy_setopt(curl, CURLOPT_URL, "smtp://example.com/");
    curl_easy_setopt(curl, CURLOPT_MAIL_RCPT_ALLOWFAILS, 1L);
    res = curl_easy_perform(curl);
    curl_slist_free_all(list);
    curl_easy_cleanup(curl);
  }
}
```

## AVAILABILITY

This option was called CURLOPT\_MAIL\_RCPT\_ALLLOWFAILS before 8.2.0

Added in 7.69.0.

## RETURN VALUE

Returns CURLE\_OK if the option is supported, and CURLE\_UNKNOWN\_OPTION if not.

## SEE ALSO

[**CURLOPT\_MAIL\_FROM**(3)](/CURLOPT_MAIL_FROM/3.md), [**CURLOPT\_MAIL\_RCPT**(3)](/CURLOPT_MAIL_RCPT/3.md)