qt send mail program

通过qt实现发送邮件,使用smtp进行发送.But can't send attachments.（functional research）
First we need to open the mailboxsmtp协议,以163邮箱为例

点击设置按钮

选择pop3选项

Then we need to turn on our computertelnet功能.
首先打开电脑的控制面板

点击程序.

Choose to enable or disable the feature.

将telentCheck this service and click OK.
测试telent是否可用.打开cmd命令窗口,输入telnet

If this window pops up, it means it is available

Turn on these services,And add an authorization code,The authorization code is what you passsmtp登录邮箱的密码.
Preliminary work is ready.
The code part is the passsmtpLog in to your mailbox and send emails.直接看代码.
smtp.h

#ifndef SMTP_H
#define SMTP_H

#include<QByteArray>
#include<QString>
#include<QTcpSocket>
class Smtp
{
    
public:
    Smtp(QByteArray username,QByteArray password);
    ~Smtp();
    void SendData(QByteArray sendIp,QByteArray s_Title,QByteArray s_Content);
    QString WaitAndReadData();
private:
    QByteArray m_UserName="";
    QByteArray m_Password="";
    QTcpSocket * m_pSocket=nullptr;
    QString m_ReceiverData="";

};

#endif // SMTP_H

smtp.cpp

#include "smtp.h"
#include<QDebug>
Smtp::Smtp(QByteArray username,QByteArray password)
{
    
    if(username.contains("@163"))
    {
    
        m_UserName= username;
        m_Password = password;
    }
    else
    {
    
        qDebug()<<"Error";
    }

}
void Smtp::SendData(QByteArray sendIp, QByteArray s_Title, QByteArray s_Content)
{
    
    m_pSocket=new QTcpSocket();
    m_pSocket->connectToHost("smtp.163.com",25,QTcpSocket::ReadWrite);  //连接163邮箱
    m_pSocket->waitForConnected(1000);
    WaitAndReadData();
    m_pSocket->write("helo localhost\r\n");
    WaitAndReadData();
    m_pSocket->write("auth login\r\n");
    WaitAndReadData();
    m_pSocket->write(m_UserName.toBase64()+"\r\n");  //写入用户名
    WaitAndReadData();
    m_pSocket->write(m_Password.toBase64()+"\r\n");  //写入密码
    WaitAndReadData();
    m_pSocket->write("mail from: <"+m_UserName+">\r\n"); //发送的邮箱
    WaitAndReadData();
    m_pSocket->write("rcpt to: <"+sendIp+">\r\n"); //接收的邮箱
    WaitAndReadData();
    m_pSocket->write("data\r\n");  //开始写入
    WaitAndReadData();
    m_pSocket->write("from:<"+m_UserName+">\r\n");  //发送名称
    WaitAndReadData();
    m_pSocket->write("to:<"+sendIp+">");  //接受名称
    WaitAndReadData();
    m_pSocket->write("data\r\n");
    WaitAndReadData();
    m_pSocket->write("Subject:"+s_Title+"\r\n");  //标题
    m_pSocket->write("\r\n");
    m_pSocket->write(s_Content.append("\r\n")); //内容
    m_pSocket->write(".\r\n");
    WaitAndReadData();
    m_pSocket->write("quit\r\n");
    m_pSocket->disconnect();

}

QString Smtp::WaitAndReadData()
{
    
    m_pSocket->waitForReadyRead(1000);
    m_ReceiverData = m_pSocket->readAll();
    return m_ReceiverData;
}
Smtp::~Smtp()
{
    
    delete m_pSocket;
}

好了,Then test our program.

Smtp smtp("邮箱名称","授权码"); //Use your own email and password //Note the authorization code,Not your password to log in to your email
smtp.SendData("[email protected]","你好","这是一个测试程序");

Email received.