c语言邮件程序如何发送附件

1. 电子邮件怎么发送附件 邮箱怎么发附件

1、首先注册邮箱后，打开注册的邮箱。

2、点击“写信”按钮，进入写信界面。在写信界面写好邮件，注意写清附件的内容。

3、添加附件。点击“添加附件”，在弹出的对话框中找到附件存放的地址，选中目标附件后，点击“打开”按钮添加附件。

4、写好邮件的主题。附件添加后，主题一栏会变成附件的文件名，此时需要根据具体的事宜，修改主题的内容。

5、添加收件人的邮箱地址。主题写好之后就可以添加收件人的地址。

6、点击“发送”按钮，发送邮件。点击邮件下方的“发送”按钮，即可发送邮件。

2. C语言邮件程序 如何发送附件

C语言发送邮件 完整代码：

#include<windows.h>
#include<stdio.h>
#include<WinSock.h>
#include<iostream>
usingnamespacestd;
#pragmacomment(lib,"ws2_32.lib")

structBase64Date6
{
unsignedintd4:6;
unsignedintd3:6;
unsignedintd2:6;
unsignedintd1:6;
};
//协议中加密部分使用的是base64方法
charConvertToBase64(charc6);
voidEncodeBase64(char*dbuf,char*buf128,intlen);
voidSendMail(char*email,char*body);
intOpenSocket(structsockaddr*addr);

intmain()
{
charEmailTo[]="[email protected]";
charEmailContents[]="From:"lucy"<[email protected]>
"
"To:"dasiy"<[email protected]>
"
"Subject:Hello

"
"HelloWorld,HelloEmail!"
//"DATA
"//告诉服务器下面是邮件
//下面是邮件头
"TO:[email protected]
"
"FROM:[email protected]
"
"SUBJECT:SMTP协议测试
"
"Date:2015-04-20
"
"X-Mailer:fice'smailer
"
"MIMI-Version:1.0
"
"Content-Type:multipart/mixed;boundary="#BOUNDARY#"

"//设置边界值，区分邮件内容的两个回车换行
"Content-Transfer-Encoding:7bit

"
"Thisisamulti-partmessageinMIMEformat

"
//发送邮件内容头部信息
"--#BOUNDARY#
"
"Content-Type:text/plain;charset=gb2312
"
"Content-Transfer-Encoding:printable

"
//发送邮件的内容部分
"SMTP协议测试：发送附件/n----byfice2015.04.20
"
//发送附件头部信息
"--#BOUNDARY#
"
"Content-Type:text/plain;name=student.txt
"
"Content-Transfer-Encoding:base64
"
"Content-Disposition:attachment;filename="test.txt"

";
SendMail(EmailTo,EmailContents);
return0;
}

charConvertToBase64(charuc)
{
if(uc<26)
{
return'A'+uc;
}
if(uc<52)
{
return'a'+(uc-26);
}
if(uc<62)
{
return'0'+(uc-52);
}
if(uc==62)
{
return'+';
}
return'/';
}

//base64的实现
voidEncodeBase64(char*dbuf,char*buf128,intlen)
{
structBase64Date6*ddd=NULL;
inti=0;
charbuf[256]={0};
char*tmp=NULL;
charcc='';

memset(buf,0,256);
strcpy_s(buf,256,buf128);
for(i=1;i<=len/3;i++)
{
tmp=buf+(i-1)*3;
cc=tmp[2];
tmp[2]=tmp[0];
tmp[0]=cc;
ddd=(structBase64Date6*)tmp;
dbuf[(i-1)*4+0]=ConvertToBase64((unsignedint)ddd->d1);
dbuf[(i-1)*4+1]=ConvertToBase64((unsignedint)ddd->d2);
dbuf[(i-1)*4+2]=ConvertToBase64((unsignedint)ddd->d3);
dbuf[(i-1)*4+3]=ConvertToBase64((unsignedint)ddd->d4);
}
if(len%3==1)
{
tmp=buf+(i-1)*3;
cc=tmp[2];
tmp[2]=tmp[0];
tmp[0]=cc;
ddd=(structBase64Date6*)tmp;
dbuf[(i-1)*4+0]=ConvertToBase64((unsignedint)ddd->d1);
dbuf[(i-1)*4+1]=ConvertToBase64((unsignedint)ddd->d2);
dbuf[(i-1)*4+2]='=';
dbuf[(i-1)*4+3]='=';
}
if(len%3==2)
{
tmp=buf+(i-1)*3;
cc=tmp[2];
tmp[2]=tmp[0];
tmp[0]=cc;
ddd=(structBase64Date6*)tmp;
dbuf[(i-1)*4+0]=ConvertToBase64((unsignedint)ddd->d1);
dbuf[(i-1)*4+1]=ConvertToBase64((unsignedint)ddd->d2);
dbuf[(i-1)*4+2]=ConvertToBase64((unsignedint)ddd->d3);
dbuf[(i-1)*4+3]='=';
}
return;
}
//发送邮件
voidSendMail(char*email,char*body)
{
intsockfd={0};
charbuf[1500]={0};
charrbuf[1500]={0};
charlogin[128]={0};
charpass[128]={0};
WSADATAWSAData;
structsockaddr_intheir_addr={0};
WSAStartup(MAKEWORD(2,2),&WSAData);
memset(&their_addr,0,sizeof(their_addr));

their_addr.sin_family=AF_INET;
their_addr.sin_port=htons(25);
hostent*hptr=gethostbyname("smtp.126.com");
memcpy(&their_addr.sin_addr.S_un.S_addr,hptr->h_addr_list[0],hptr->h_length);
printf("IPofsmpt.126.comis:%d:%d:%d:%d
",
their_addr.sin_addr.S_un.S_un_b.s_b1,
their_addr.sin_addr.S_un.S_un_b.s_b2,
their_addr.sin_addr.S_un.S_un_b.s_b3,
their_addr.sin_addr.S_un.S_un_b.s_b4);

//连接邮件服务器，如果连接后没有响应，则2秒后重新连接
sockfd=OpenSocket((structsockaddr*)&their_addr);
memset(rbuf,0,1500);
while(recv(sockfd,rbuf,1500,0)==0)
{
cout<<"reconnect..."<<endl;
Sleep(2);
sockfd=OpenSocket((structsockaddr*)&their_addr);
memset(rbuf,0,1500);
}

cout<<rbuf<<endl;

//EHLO
memset(buf,0,1500);
sprintf_s(buf,1500,"EHLOHYL-PC
");
send(sockfd,buf,strlen(buf),0);
memset(rbuf,0,1500);
recv(sockfd,rbuf,1500,0);
cout<<"EHLOREceive:"<<rbuf<<endl;

//AUTHLOGIN
memset(buf,0,1500);
sprintf_s(buf,1500,"AUTHLOGIN
");
send(sockfd,buf,strlen(buf),0);
memset(rbuf,0,1500);
recv(sockfd,rbuf,1500,0);
cout<<"AuthLoginReceive:"<<rbuf<<endl;

//USER
memset(buf,0,1500);
sprintf_s(buf,1500,"[email protected]");//你的邮箱账号
memset(login,0,128);
EncodeBase64(login,buf,strlen(buf));
sprintf_s(buf,1500,"%s
",login);
send(sockfd,buf,strlen(buf),0);
cout<<"Base64UserName:"<<buf<<endl;
memset(rbuf,0,1500);
recv(sockfd,rbuf,1500,0);
cout<<"UserLoginReceive:"<<rbuf<<endl;

//PASSWORD
sprintf_s(buf,1500,"********");//你的邮箱密码
memset(pass,0,128);
EncodeBase64(pass,buf,strlen(buf));
sprintf_s(buf,1500,"%s
",pass);
send(sockfd,buf,strlen(buf),0);
cout<<"Base64Password:"<<buf<<endl;

memset(rbuf,0,1500);
recv(sockfd,rbuf,1500,0);
cout<<"SendPasswordReceive:"<<rbuf<<endl;

//MAILFROM
memset(buf,0,1500);
sprintf_s(buf,1500,"MAILFROM:<[email protected]>
");
send(sockfd,buf,strlen(buf),0);
memset(rbuf,0,1500);
recv(sockfd,rbuf,1500,0);
cout<<"setMailFromReceive:"<<rbuf<<endl;

//RCPTTO第一个收件人
sprintf_s(buf,1500,"RCPTTO:<%s>
",email);
send(sockfd,buf,strlen(buf),0);
memset(rbuf,0,1500);
recv(sockfd,rbuf,1500,0);
cout<<"TellSendtoReceive:"<<rbuf<<endl;

//DATA准备开始发送邮件内容
sprintf_s(buf,1500,"DATA
");
send(sockfd,buf,strlen(buf),0);
memset(rbuf,0,1500);
recv(sockfd,rbuf,1500,0);
cout<<"SendMailPrepareReceive:"<<rbuf<<endl;

//发送邮件内容，
.
内容结束标记
sprintf_s(buf,1500,"%s
.
",body);
send(sockfd,buf,strlen(buf),0);//发送邮件，不带附件的内容

//用二进制方式读取附件文件内容并转为base64格式
FILE*pf=fopen("D:\test.txt","rb");
fseek(pf,0,SEEK_END);
intfilelen=ftell(pf);
char*filebuf=(char*)malloc(filelen);
char*filebase64=(char*)malloc(filelen*2);
memset(filebase64,0,filelen*2);
fseek(pf,0,SEEK_SET);
fread(filebuf,1,filelen,pf);
EncodeBase64(filebase64,filebuf,filelen);

send(sockfd,filebase64,strlen(filebase64),0);//发送邮件的内容
memset(rbuf,0,1500);
recv(sockfd,rbuf,1500,0);
cout<<"SendMailReceive:"<<rbuf<<endl;

//QUIT
sprintf_s(buf,1500,"QUIT
");
send(sockfd,buf,strlen(buf),0);
memset(rbuf,0,1500);
recv(sockfd,rbuf,1500,0);
cout<<"QuitReceive:"<<rbuf<<endl;

//清理工作
closesocket(sockfd);
WSACleanup();
return;
}
//打开TCPSocket连接
intOpenSocket(structsockaddr*addr)
{
intsockfd=0;
sockfd=socket(PF_INET,SOCK_STREAM,0);
if(sockfd<0)
{
cout<<"Opensockfd(TCP)error!"<<endl;
exit(-1);
}
if(connect(sockfd,addr,sizeof(structsockaddr))<0)
{
cout<<"Connectsockfd(TCP)error!"<<endl;
exit(-1);
}
returnsockfd;
}

3. 邮件怎么发附件

打开163邮箱的“写信”窗口，点击带有回形针标志的“添加附件”按钮即可在你的本地文件中找到要发的文件（邮箱是不能添加文件夹的，如果是文件夹需要将文件夹压缩再添加），下面为图示步骤：

1.打开163邮箱，点击“写信”。

4. 怎样把电子邮件以附件形式发送！

1、双击打开电脑桌面的QQ邮箱，进入QQ邮箱。/mail.qq.com/cgi-bin/loginpage"target="_blank"title="QQ邮箱官网">QQ邮箱官网

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2、在进入官网后在页面上输入账号密码登录QQ邮箱。
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3、在进入QQ邮箱后点击写信选项，进入写邮件界面中。
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4、在写邮件界面中将文本输入完成后点击页面上的添加附件选项，将需要发送的文件添加到邮箱的附件中去。
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5、点击发送按键即可。
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5. 如何创建带附件的邮件并发送它使用 MAPI / VC + +

本文演示了如何制作和发送消息。它还演示如何将附件添加到要发送的消息。
更多信息
下面的代码创建 MAPI 会话、 登录到私有消息存储区，创建一封新邮件、 邮件上, 设置属性，然后将其发送。

该邮件的收件人，从 Exchange 或 Outlook 邮件客户端上显示的典型的地址对话框中选择。

编译下面的代码使用在 链接 选项卡上的 项目设置 对话框 忽略所有默认库 选项。必须也使用了以下库：
Mapi32.lib
Version.lib
Edkdebug.lib
Edkmapi.lib
Edkutils.lib
Addrlkup.lib
Edkguid.lib
Rulecls.lib
Msvcrt.lib
#include <edk.h>
HRESULT SetMessageProp ( LPMAPISESSION m_pSession,
LPMESSAGE lpMessage);

int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE, LPSTR pszCmd,
int nCmdShow)
{
// Load strings, and register window classes.
LPMDB lpStore = NULL;
LPMAPISESSION lpSession = NULL;
LPMESSAGE lpMessage = NULL;
HRESULT hr = NULL;
ULONG cbEntryID = 0;
LPENTRYID lpEntryID = NULL;
LPCIID lpInterface = NULL;
ULONG ulFlags = MAPI_BEST_ACCESS;
ULONG ulObjType = 0;
LPMAPIFOLDER lpFolder = NULL;
ULONG cbEIDFolder = 0;
LPENTRYID lpEIDFolder = NULL;
CHAR szFolder[MAX_PATH + 1] = {0};

hr = MAPIInitialize(NULL);
if (FAILED(hr))
{
return 1;
}
hr = MAPILogonEx(0,"", NULL,
MAPI_LOGON_UI | MAPI_NEW_SESSION | MAPI_EXPLICIT_PROFILE,
&lpSession);

if (FAILED(hr))
{
MessageBox(NULL,"MAPI Logon failed",NULL,MB_OK);
goto cleanup;
}

if (FAILED(hr = HrOpenExchangePrivateStore(lpSession,&lpStore)))
{
MessageBox(NULL,"Message Store Not Opened",NULL,MB_OK);
goto cleanup;
}

strcpy(szFolder, "Top of Information Store\\Outbox");
hr = HrMAPIOpenFolderEx (lpStore,'\\',szFolder,&lpFolder);
if (FAILED(hr))
{
MessageBox(NULL,"Outbox Could Not Be Opened",NULL,MB_OK);
goto cleanup;
}

if (FAILED(hr = lpFolder->CreateMessage(NULL, MAPI_DEFERRED_ERRORS, &lpMessage)))
{
MessageBox(NULL,"CreateMessage Fail",NULL,MB_OK);
goto cleanup;
}

if (FAILED(hr = SetMessageProp(lpSession, lpMessage)))
goto cleanup;

cleanup:

if ( NULL != lpMessage )
{
lpMessage ->Release ( );
lpMessage = NULL;
}

if (NULL != lpFolder)
{
lpFolder->Release();
lpFolder = NULL;
}
if (lpSession)
{
lpSession->Logoff(0, 0, 0);
ULRELEASE(lpSession);
}
MAPIUninitialize();
return 0;
}

HRESULT SetMessageProp ( LPMAPISESSION lpSession,
LPMESSAGE lpMessage)
{
HRESULT hr = S_OK;
enum {SUBJECT, CLASS, BODY, MSG_DEL, MSG_PROPS };
LPADRBOOK lpAdrBook = NULL;
LPADRLIST lpAdrList = NULL;
LPATTACH pAtt = NULL;
ULONG ulAttNum;

// Display Address Dialog

if (FAILED(hr = lpSession->OpenAddressBook(0L,NULL,0,&lpAdrBook)))
goto Quit;

LPSTR rglpszDestTitles[1];
ULONG rgulDestComps[1];
ULONG m_hWnd1;
rglpszDestTitles[0] = "To";
rgulDestComps[0] = MAPI_TO;
ADRPARM adrparm;
adrparm.cbABContEntryID = 0;
adrparm.lpABContEntryID = NULL;
adrparm.ulFlags = DIALOG_MODAL;
adrparm.lpReserved = NULL;
adrparm.ulHelpContext = 0;
adrparm.lpszHelpFileName = NULL;
adrparm.lpfnABSDI = NULL;
adrparm.lpfnDismiss = NULL;
adrparm.lpvDismissContext = NULL;
adrparm.lpszCaption = "MAPI Dialog";
adrparm.lpszNewEntryTitle = "For this test dialog";
adrparm.lpszDestWellsTitle = "Selected Recipients:";
adrparm.cDestFields = 0xffffffff;
adrparm.nDestFieldFocus = 0;
adrparm.lppszDestTitles = NULL;
adrparm.lpulDestComps = NULL;
adrparm.lpContRestriction = NULL;
adrparm.lpHierRestriction = NULL;
m_hWnd1 = 0;

if (FAILED(hr = lpAdrBook->Address(&m_hWnd1,&adrparm,&lpAdrList)))
goto Quit;

// Message properties tag array
SPropValue lpPropValueArray2[MSG_PROPS];
lpPropValueArray2[SUBJECT].ulPropTag = PR_SUBJECT;
lpPropValueArray2[SUBJECT].Value.lpszA = "Testing IPM With Attachments";

// TO DO:Change this to your custom form class

lpPropValueArray2[CLASS].ulPropTag = PR_MESSAGE_CLASS;
lpPropValueArray2[CLASS].Value.lpszA = "IPM.Note";
lpPropValueArray2[BODY].ulPropTag = PR_BODY;
lpPropValueArray2[BODY].Value.lpszA = "Custom Text For Message";
lpPropValueArray2[MSG_DEL].ulPropTag = PR_DELETE_AFTER_SUBMIT;
lpPropValueArray2[MSG_DEL].Value.b = TRUE;

if (FAILED(hr = lpMessage->ModifyRecipients(MODRECIP_ADD,lpAdrList)))
goto Quit;

if (FAILED(hr = lpMessage->CreateAttach( NULL, (ULONG)0, &ulAttNum, &pAtt)))
goto Quit;
{

enum {METHOD,RENDERING,PATH, FILENAME, DISPLAYNAME, NUM_ATT_PROPS};
SPropValue spvAttach[NUM_ATT_PROPS];
spvAttach[METHOD].ulPropTag = PR_ATTACH_METHOD;
spvAttach[METHOD].Value.l = ATTACH_BY_REFERENCE;

spvAttach[RENDERING].ulPropTag = PR_RENDERING_POSITION;
spvAttach[RENDERING].Value.l = -1;

spvAttach[PATH].ulPropTag = PR_ATTACH_PATHNAME;
spvAttach[PATH].Value.lpszA ="\\\\<server>\\<share>\\code.txt";

spvAttach[FILENAME].ulPropTag = PR_ATTACH_FILENAME;
spvAttach[FILENAME].Value.lpszA = "code.txt";

spvAttach[DISPLAYNAME].ulPropTag = PR_DISPLAY_NAME;
spvAttach[DISPLAYNAME].Value.lpszA = "Great code.txt";

// Save the properties we have set on the attachment
if (FAILED(hr = pAtt ->SetProps(
NUM_ATT_PROPS,
(LPSPropValue)&spvAttach,
NULL)))
goto Quit;

if (FAILED(hr = pAtt->SaveChanges(0)))
goto Quit;

}

if (FAILED(hr = lpMessage->SetProps(MSG_PROPS,lpPropValueArray2,NULL)))
goto Quit;

if (FAILED(hr = lpMessage->SubmitMessage(0L)))
goto Quit;

// Clean up and release all objects no longer needed in this
// method. Be sure to return the value of hr to the caller.

Quit:

if ( NULL != lpAdrBook )
{
lpAdrBook ->Release ( );
lpAdrBook = NULL;
}

if ( NULL != lpAdrList )
{
MAPIFreeBuffer(lpAdrList);
lpAdrList = NULL;
}

if ( NULL != pAtt )
{
pAtt ->Release ( );
pAtt = NULL;
}

return hr;

}

6. 邮件附件怎么发送

就是把文件以word形式保存，再用附件发送即可。

具体操作步骤如下：

一、第一步先输入邮箱的账号和密码登录上需要发送邮件的邮箱，如下图所示。