This plugin allows developers to manage email configuration for their site by using environment variables, specifically through a MAILER_DSN string. It is designed for users who need a flexible and secure way to handle mail settings without hardcoding sensitive data into their codebase.

• Environment-based configuration: Define mail settings via MAILER_DSN or related environment variables, keeping credentials out of source code for better security.
• Multiple protocol support: Works with various mail protocols including mail, sendmail, qmail, SMTP, and SMTPS, accommodating different server setups.
• Advanced customization options: Use query strings in the DSN to set additional parameters like XMailer or FromName, and access specific properties for fine-tuned control.
• Integration with external services: Easily connect to services like Gmail by configuring SMTP details in the DSN, simplifying email delivery from third-party providers.
• Separate variable support: For complex configurations, use individual MAILER_* variables (e.g., MAILER_DEBUG, MAILER_FROM) to avoid long, unreadable DSN strings, enhancing maintainability.