README

Lightweight PHP mail client with SMTP support, automatic configuration management, and complete email functionality.
Built on PHPMailer, providing stable and reliable email delivery experience.

• Three Core Features
  • Automatic Configuration Management
  • Bulk Sending Support
  • Stable Connection
• Features
• Usage
  • Installation
  • Environment Variables Setup
  • Basic Usage
• API Reference
  • Basic Sending
  • Bulk Sending
• Error Handling
• License
• Author

Three Core Features

Automatic Configuration Management

Automatically configure connection parameters based on environment variables, supporting multiple SMTP services

Bulk Sending Support

Support bulk email sending functionality, suitable for system notifications and high-volume sending needs

Stable Connection

Built-in error handling and automatic cleanup mechanisms to ensure reliable email delivery

Features

• Environment Variable Configuration: Flexible environment variable setup supporting multi-environment deployment
• SMTP Support: Support for multiple SMTP services with automatic encryption configuration
• HTML/Plain Text: Support for both HTML and plain text email formats
• Multiple Recipients: Support for multiple recipients, CC, and BCC
• Priority Settings: Support for high, normal, and low priority email sending
• Bulk Sending: Built-in bulk sending functionality for improved sending efficiency
• Automatic Cleanup: Automatic cleanup of recipient lists after sending

Usage

Installation

composer require pardnchiu/mailer

Environment Variables Setup

MAIL_SERVICE=smtp.gmail.com          # SMTP server
MAIL_SERVICE_USER=your@email.com     # Sender account
MAIL_SERVICE_PASSWORD=your_password  # Password or app password
MAIL_SERVICE_PORT=587                # SMTP port (465/587/25)
MAIL_SERVICE_CHARSET=UTF-8           # Character encoding

Basic Usage

Method 1: Static Call (Recommended)

<?php

use pardnchiu\Mailer;

// Direct static call
$result = Mailer::send([
  "email"     => "recipient@example.com",
  "subject"   => "Test Email",
  "body"      => "<h1>This is a test email</h1>",
  "isHtml"    => true
]);

if ($result) {
  echo "Email sent successfully";
} else {
  echo "Email sending failed";
}

Method 2: Instance Call

<?php

use pardnchiu\Mailer;

// Initialize mail client
$mailer = new Mailer();

// Basic email sending (calling static method through instance)
$result = $mailer::send([
  "email"     => "recipient@example.com",
  "subject"   => "Test Email",
  "body"      => "<h1>This is a test email</h1>",
  "isHtml"    => true
]);

if ($result) {
  echo "Email sent successfully";
} else {
  echo "Email sending failed";
}

API Reference

Basic Sending

Mailer::send($config) - Send single email (static call)

$result = Mailer::send([
  "email"     => "recipient@example.com",          // Recipient (required)
  "subject"   => "Email Subject",                  // Subject (required)
  "body"      => "Email Content",                  // Content (required)
  "altBody"   => "Plain text content",             // Plain text version (optional)
  "fromEmail" => "sender@example.com",            // Sender email (optional, defaults to configured account)
  "fromName"  => "Sender Name",                   // Sender name (optional)
  "cc"        => ["cc@example.com"],              // CC (optional)
  "bcc"       => ["bcc@example.com"],             // BCC (optional)
  "priority"  => "high",                          // Priority: high/normal/low (optional)
  "isHtml"    => true                             // HTML format (optional, default false)
]);

Multiple Recipients

$config = [
  "email" => [
    "user1@example.com" => "User One",
    "user2@example.com" => "User Two",
    "user3@example.com"
  ],
  "subject" => "Group Notification",
  "body"    => "This is a group notification email"
];

$result = Mailer::send($config);

CC and BCC

$config = [
  "email"   => "primary@example.com",
  "cc"      => [
    "cc1@example.com" => "CC User One",
    "cc2@example.com"
  ],
  "bcc"     => [
    "bcc1@example.com" => "BCC User One",
    "bcc2@example.com"
  ],
  "subject" => "Important Notice",
  "body"    => "Email content"
];

$result = Mailer::send($config);

Bulk Sending

Mailer::sendBulk($recipients, $subject, $body, $options) - Bulk email sending (static call)

Note: Bulk sending automatically adds a random interval of 1-3 seconds between each email to avoid triggering rate limits from email providers like Gmail and iCloud.

$results = Mailer::sendBulk(
  [
    "user1@example.com" => "User One",
    "user2@example.com" => "User Two",
    "user3@example.com" => "User Three"
  ],
  "Bulk Notification Email",
  "<h1>This is a bulk sent email</h1>",
  [
    "isHtml"    => true,
    "priority"  => "normal",
    "fromName"  => "System Administrator"
  ]
);

// Check sending results
foreach ($results as $email => $success) {
  if ($success) {
    echo "Successfully sent to {$email}\n";
  } else {
    echo "Failed to send to {$email}\n";
  }
}

Error Handling

try {
  $mailer = new Mailer();
  
  $result = Mailer::send([
    "email"   => "test@example.com",
    "subject" => "Test Email",
    "body"    => "Test content"
  ]);
  
  if ($result) {
    echo "Email sent successfully";
  } else {
    echo "Email sending failed";
  }
    
} catch (\Exception $e) {
  error_log("Email sending error: " . $e->getMessage());
  
  if (strpos($e->getMessage(), "SMTP connect() failed") !== false) {
    echo "SMTP connection failed, please check server settings";
  } elseif (strpos($e->getMessage(), "Authentication") !== false) {
    echo "SMTP authentication failed, please check username and password";
  } else {
    echo "Email sending exception: " . $e->getMessage();
  }
}

Connection Test

// Test SMTP connection
try {
  $mailer = new Mailer();
  
  // Send test email
  $result = Mailer::send([
      "email"   => "test@example.com",
      "subject" => "SMTP Connection Test",
      "body"    => "If you receive this email, SMTP configuration is correct."
  ]);
  
  echo $result ? "SMTP configuration is correct" : "SMTP configuration error";
  
} catch (\Exception $e) {
  echo "SMTP test failed: " . $e->getMessage();
}

Bulk Sending Monitoring

$results = Mailer::sendBulk([
    "user1@example.com" => "User One",
    "user2@example.com" => "User Two",
    "user3@example.com" => "User Three"
], "Notification", "Content");

$successCount = array_sum($results);
$totalCount = count($results);
$failureCount = $totalCount - $successCount;

echo "Bulk sending completed - Success: {$successCount}, Failed: {$failureCount}, Total: {$totalCount}";

License

This source code project is licensed under MIT.

Author

邱敬幃 Pardn Chiu

©️ 2025 邱敬幃 Pardn Chiu