Section: curl_easy_setopt options (3)
Updated: June 25, 2020
CURLOPT_SASL_AUTHZID - authorisation identity (identity to act as)
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SASL_AUTHZID, char *authzid);
Pass a char * as parameter, which should be pointing to the null-terminated
authorisation identity (authzid) for the transfer. Only applicable to the PLAIN
SASL authentication mechanism where it is optional.
When not specified only the authentication identity (authcid) as specified by
the username will be sent to the server, along with the password. The server
will derive a authzid from the authcid when not provided, which it will then
When the authzid is specified, the use of which is server dependent, it can be
used to access another user's inbox, that the user has been granted access to,
or a shared mailbox for example.
IMAP, POP3 and SMTP
CURL *curl = curl_easy_init();
curl_easy_setopt(curl, CURLOPT_URL, "imap://example.com/");
curl_easy_setopt(curl, CURLOPT_USERNAME, "Kurt");
curl_easy_setopt(curl, CURLOPT_PASSWORD, "xipj3plmq");
curl_easy_setopt(curl, CURLOPT_SASL_AUTHZID, "Ursel");
ret = curl_easy_perform(curl);
Added in 7.66.0
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.