Use the open source project PHPMailer to send emails

This is using the open source project PHPMailer to send emails. First download the file. I downloaded version 5.1 here, and then put the three class.***.php files under the project file. I first used gmail, but it failed. The problem was that the authentication failed. Later, I used QQ mailbox and the message was sent successfully.

require("class.phpmailer.php"); //The downloaded file must be placed in the directory where the file is located
$mail = new PHPMailer(); //Create an email sending class
$address ="youbinliu@126.com";
$mail->IsSMTP(); // Use SMTP to send
$mail->Host = "smtp.qq.com"; // Your business post office domain name
$ mail->SMTPAuth = true; // Enable SMTP authentication function
$mail->Username = "843831601@qq.com"; // Post office username (please fill in the complete email address)
$mail->Password = "***********"; //Post office password
$mail->Port=25;
$mail->From = "843831601@qq.com"; //Email sender Email address
$mail->FromName = "liuyoubin";
$mail->AddAddress("$address", "a");//The recipient address can be replaced with any email address you want to receive emails from , the format is AddAddress("recipient email", "recipient name")
//$mail->AddReplyTo("", "");

//$mail->AddAttachment("/var /tmp/file.tar.gz"); //Add attachment
//$mail->IsHTML(true); // set email format to HTML //Whether to use HTML format

$mail->Subject = "PHPMailer test email"; //Email title
$mail->Body = "Hello, this is a test email"; //Email content
$mail->AltBody = "This is the body in plain text for non- HTML mail clients"; //Additional information, you can omit

if(!$mail->Send())
{
echo "Failed to send email. ";
echo "Error reason: " . $ mail->ErrorInfo;
exit;
}

echo "Mail sent successfully";

/***************************************************

Attachments ：
phpmailer Chinese Instructions for Use (Simplified Version)
Start with A:
$AltBody--Attribute
From: PHPMailer::$AltBody
File: class.phpmailer.php
Note: The setting of this attribute is in the email body and does not support HTML The alternative display
AddAddress--method
 comes from: PHPMailer::AddAddress(), file: class.phpmailer.php
 Description: Add recipients. Parameter 1 is the recipient's email address, and parameter 2 is the recipient's title. For example, AddAddress("eb163@eb163.com","eb163"), but parameter 2 is optional, and AddAddress(eb163@eb163.com) is also possible.
Function prototype: public function AddAddress($address, $name = '') {}
AddAttachment--Method
From: PHPMailer::AddAttachment()
File: class.phpmailer.php.
Instructions: Add attachments.
Parameters: path, name, encoding, type. Among them, the path is required, and the others are optional. Function prototype:
AddAttachment($path, $name = '', $encoding = 'base64', $type = 'application/octet-stream'){}
AddBCC- -Method
From: PHPMailer::AddBCC()
File: class.phpmailer.php
Description: Add a BCC. For the difference between CC and BCC, please see [Difference between BCC and CC in SMTP sending].
Parameter 1 is the address, parameter 2 is the name. Note that this method only supports SMTP under win32 and does not support the mail function.
Function prototype: public function AddBCC($address, $name = ''){}
AddCC --Method
from: PHPMailer::AddCC()
 file : class.phpmailer.php
Description: Add a CC. For the difference between CC and BCC, please see [Difference between BCC and CC in SMTP sending].
Parameter 1 is the address, parameter 2 is the name. Note that this method only supports SMTP under win32 and does not support the mail function.
Function prototype: public function AddCC($address, $name = '') {}
AddCustomHeader--Method
 From: PHPMailer::AddCustomHeader()
File: class.phpmailer.php
Description: Add a custom E-mail header.
The parameter is the header information
Function prototype: public function AddCustomHeader($custom_header){}
AddEmbeddedImage --Method
From: PHPMailer::AddEmbeddedImage()
File: class.phpmailer.php
Description: Add an embedded image
 Parameters: path, return handle [, name, encoding, type]
 Function prototype: public function AddEmbeddedImage($path, $cid, $name = '', $encoding = 'base64', $type = 'application/octet-stream ') {}
Tips: AddEmbeddedImage(PICTURE_PATH. "index_01.jpg ", "img_01 ", "index_01.jpg ");
Referenced in html
AddReplyTo--method
From: PHPMailer:: AddRepl
**** **********************************************/
?>

Open source, email sending, PHPMailer