Install PHPMailer on CentOS Systems

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∟PHPMailer - PHP Package for Sending Emails

∟Install PHPMailer on CentOS Systems

This section provides a tutorial example on how to install PHPMailer on CentOS systems.

What Is PHPMailer? PHPMailer is a PHP package that allows to send out email messages in PHP scripts.

Main features of PHPMailer are:

Integrated SMTP support – send without a local mail server
Send emails with multiple To, CC, BCC and Reply-to addresses
Add attachments, including inline
Support for UTF-8 content and 8bit, base64, binary, and quoted-printable encodings
SMTP authentication with LOGIN, PLAIN, CRAM-MD5, and XOAUTH2 mechanisms over SMTPS and SMTP+STARTTLS transports
Validates email addresses automatically
Protects against header injection attacks
Error messages in over 50 languages!
DKIM and S/MIME signing support

Here is what I did to install PHPMailer on my CentOS 8 computer.

1. Make sure you have PHP Composer installed:

herong$ /usr/local/bin/composer --version
  Composer version 2.1.3 2021-06-09 16:31:20

2. Using "composer require" command to install PHPMailer:

herong$ /usr/local/bin/composer require phpmailer/phpmailer
Using version ^6.4 for phpmailer/phpmailer
./composer.json has been created
Running composer update phpmailer/phpmailer
Loading composer repositories with package information
Updating dependencies
Lock file operations: 1 install, 0 updates, 0 removals
  - Locking phpmailer/phpmailer (v6.4.1)
Writing lock file
Installing dependencies from lock file (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
  - Downloading phpmailer/phpmailer (v6.4.1)
  - Installing phpmailer/phpmailer (v6.4.1): Extracting archive

3. Find the PHPMailer class directory:

herong$ /usr/local/bin/composer show phpmailer/phpmailer
  name     : phpmailer/phpmailer
  descrip. : PHPMailer is a full-featured email creation and transfer
             class for PHP
  keywords :
  versions : * v6.4.1
  path     : /home/herong/local/php/vendor/phpmailer/phpmailer
  names    : phpmailer/phpmailer

4. Write a PHP script to test the PHPMailer class:

herong$ vi PHPMail-Test.php

<?php
#  PHPMailer-Test.php
#- Copyright (c) 2019-2023 HerongYang.com. All Rights Reserved.

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\SMTP;
use PHPMailer\PHPMailer\Exception;

$srcDir = "/home/herong/local/php/vendor/phpmailer/phpmailer/src/";
require "$srcDir/PHPMailer.php";
require "$srcDir/SMTP.php";
require "$srcDir/Exception.php";

$mail = new PHPMailer(true);
?>

herong$ php PHPMail-Test.php