Lettermint

Lettermint is a professional email delivery plugin that seamlessly integrates with WordPress’s built-in wp_mail() function to send transactional emails through the Lettermint email service. Based in Europe, Lettermint provides reliable email delivery with excellent deliverability rates.

Features

• Seamless Integration: Works with wp_mail() – no code changes required
• Europe-based Service: GDPR compliant email service based in Europe
• Easy Configuration: Simple setup with just your API token and sender email
• Comprehensive Logging: Optional email activity logging with detailed information
• Conflict Detection: Automatically detects and warns about conflicting email plugins
• Test Email: Built-in test email functionality to verify your setup
• Configure via wp-config: Set any option with a constant in wp-config or an environment variable, not just the dashboard
• WP-CLI Support: Check your API token and send test emails from the command line with wp lettermint

How It Works

1. Install and activate the Lettermint plugin
2. Get your API token from Lettermint Dashboard
3. Configure your settings in WordPress admin under Settings > Lettermint
4. All WordPress emails will automatically be sent through Lettermint

Requirements

• WordPress 6.4 or higher
• PHP 7.4 or higher
• Lettermint account and API token

Configuration

Required Settings

• API Token: Your Lettermint API token from your project

Optional Settings

• From Email Address: Custom sender email address (uses WordPress default if empty)
• Force Email Address: Override sender addresses set by plugins with your configured email
• Logging level: Choose how much to log — Disabled, Errors only, Metadata only (no message content), or Full (with content)
• Log retention: Set your own data retention period — logs are deleted automatically after the number of days you choose, or kept forever

External Services

This plugin uses an external service to deliver transactional emails via the Lettermint API.

• Service Name: Lettermint API (https://lettermint.co)
• Purpose: This service is used to send transactional emails generated by WordPress (e.g. password resets, contact form notifications, WooCommerce emails, etc.) through the Lettermint email infrastructure.
• What Data Is Sent: Each time an email is sent via WordPress, the following data is sent to the Lettermint API:
  • Email recipient(s)
  • Subject
  • Email content (HTML and plain text)
  • Sender email address
  • Headers (optional)
  • Lettermint Terms and Conditions
  • Lettermint Privacy Policy

  Read the full description on the official page →