首先要安装这个库，

其次，要把需要的协议加上，./configure --enable-smtp --enable-pop3

make

make install

使用curl --version 查看使用版本是否一样

smtp代码实例：

###############################################################################

#include <stdio.h>

#include <curl/curl.h>

size_t read_data(void *ptr, size_t size, size_t nmemb, void *data)

{

// FILE *fp = (FILE *)data;

size_t return_size = fread(ptr, size, nmemb, data);

printf("write %d\n", (int)return_size);

return return_size;

}

int main()

{

CURL *curl;

CURLcode res;

FILE *fp = fopen("data.txt", "rb");

if (fp == NULL) {

printf("can't open \n");

return -1;

}

struct curl_slist *slist=NULL;

curl = curl_easy_init();

if(curl) {

curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);

curl_easy_setopt(curl, CURLOPT_HEADER, 1L)；

curl_easy_setopt(curl, CURLOPT_FTPSSLAUTH, CURLFTPAUTH_SSL);

curl_easy_setopt(curl, CURLOPT_MAIL_FROM, "<mulinhai123@163.com>"); //发送者

curl_easy_setopt(curl, CURLOPT_URL, "smtp://smtp.163.com");

slist = curl_slist_append(slist, "<9191247@163.com>"); //接收者

curl_easy_setopt(curl, CURLOPT_MAIL_RCPT, slist);

curl_easy_setopt(curl, CURLOPT_USERNAME, username);

curl_easy_setopt(curl, CURLOPT_PASSWORD, password);

curl_easy_setopt(curl, CURLOPT_READDATA, fp);

curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_data);

}

res = curl_easy_perform(curl);

printf("The return code is %d\n", res);

fclose(fp);

curl_slist_free_all(slist);

curl_easy_cleanup(curl);

return 0;

}

data.txt内容可以随便

subject: test

123

 

转自:http://blog.sina.com.cn/s/blog_6026371d0100mqab.html