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In the process of finding a solution, I discovered the jakub-kaspar/mailer library, which is a mail sending and logging tool based on the Nette framework. Its main functions include email sending, mail filtering and detailed logging, which can meet my needs.

First, using Composer to install this library is very simple, just run the following command:

 <code class="bash">composer require jakub-kaspar/mailer</code>

After the installation is complete, the library needs to be configured next. The configuration file of the jakub-kaspar/mailer library is config.neon . In this file, we need to define some parameters:

• db : Database configuration, which is a required parameter to store mail logs.
• filters : Mail filter configuration, which is also a required parameter for preprocessing of messages.
• mailer : Mailer configuration, which is an optional parameter that can be used with any instance of the IMailer interface that implements Nette.
• maxInBody : Optional parameter to specify the number of report messages that can be sent in the message body.
• maxReport : Optional parameter to specify the maximum size of the report file (in the form of a .txt file).

Once the configuration is complete, we can start using this library to send emails and log logs. Here is a simple example code showing how to use this library:

 <code class="php">use JakubKaspar\Mailer\EmailLogModel; use JakubKaspar\Mailer\Mailer; $mailer = new Mailer($config); // $config 是從config.neon 文件中讀取的配置$emailLogModel = new EmailLogModel($config); $mailer->send('recipient@example.com', 'Subject', 'Message'); $emailLogModel->logEmail('recipient@example.com', 'Subject', 'Message');</code>

In addition, the jakub-kaspar/mailer library also supports custom filters. If you need to do specific processing of emails, you can implement the IFilter interface and register your filter in the config.neon file. For example:

 <code class="php">use JakubKaspar\Mailer\IFilter; class MyCustomFilter implements IFilter { public function filter($email) { // 自定義過(guò)濾邏輯return $email; } }</code>

Then add in the config.neon file:

 <code class="neon">filters: myCustomFilter: MyCustomFilter</code>

Finally, regarding the configuration of the database, the jakub-kaspar/mailer library has preset the table structure in EmailLogModel . If you want to use your own database structure, you can create tables through SQL commands:

 <code class="sql">CREATE TABLE `email_log` ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `created` datetime DEFAULT NULL, `from` varchar(100) DEFAULT NULL, `to` varchar(100) DEFAULT NULL, `subject` varchar(255) DEFAULT NULL, `message` text, `message_object` longblob, `is_sent` tinyint(1) unsigned NOT NULL DEFAULT '0', `number_of_tries` tinyint(3) unsigned NOT NULL DEFAULT '0', `exception` varchar(255) DEFAULT NULL, `is_reported` tinyint(1) NOT NULL DEFAULT '0', PRIMARY KEY (`id`), KEY `is_sent` (`is_sent`), KEY `number_of_tries` (`number_of_tries`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8</code>

By using the jakub-kaspar/mailer library, I successfully solved the issue of mail logging. This library not only simplifies the process of mail sending and logging, but also provides flexible configuration options and custom filter functions, greatly improving development efficiency and system maintainability. Whether it is a small project or a large application, jakub-kaspar/mailer is a recommended mail processing solution.

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