Title: Lettermint
Author: Lettermint
Published: <strong>2025-06-01</strong>
Last modified: 2026-06-19

---

Szukaj wtyczek

![](https://ps.w.org/lettermint/assets/banner-772x250.jpg?rev=3312966)

![](https://ps.w.org/lettermint/assets/icon-256x256.jpg?rev=3304449)

# Lettermint

 Autor: [Lettermint](https://profiles.wordpress.org/lettermint/)

[Pobierz](https://downloads.wordpress.org/plugin/lettermint.1.5.0.zip)

 * [Szczegóły](https://pl.wordpress.org/plugins/lettermint/#description)
 * [Recenzje](https://pl.wordpress.org/plugins/lettermint/#reviews)
 *  [Instalacja](https://pl.wordpress.org/plugins/lettermint/#installation)
 * [Rozwój](https://pl.wordpress.org/plugins/lettermint/#developers)

 [Wsparcie](https://wordpress.org/support/plugin/lettermint/)

## Opis

[Lettermint](https://lettermint.co) 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](https://app.lettermint.co/projects)
 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
 * **Enable Logs**: Keep track of email activities and API responses

### 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)
 * **When Is Data Sent**: Data is only sent when an email is triggered by WordPress
   and the plugin is active and properly configured.
 * **Where**: All data is sent to Lettermint’s API endpoint: `https://api.lettermint.
   co`
 * **Terms and Policies**:
    - [Lettermint Terms and Conditions](https://lettermint.co/terms-of-service)
    - [Lettermint Privacy Policy](https://lettermint.co/privacy-policy)

The plugin only communicates with Lettermint’s servers when sending an email and
does not transmit or collect any other data beyond what is needed to send the email.

## Zrzuty ekranu

[⌊General settings page with API token and sender email configuration⌉⌊General settings
page with API token and sender email configuration⌉[

General settings page with API token and sender email configuration

[⌊Test email functionality to verify your setup⌉⌊Test email functionality to verify
your setup⌉[

Test email functionality to verify your setup

[⌊Comprehensive logging with detailed email activity⌉⌊Comprehensive logging with
detailed email activity⌉[

Comprehensive logging with detailed email activity

## Instalacja

 1. Upload the plugin files to the `/wp-content/plugins/lettermint` directory, or install
    the plugin through the WordPress plugins screen directly
 2. Activate the plugin through the 'Plugins’ screen in WordPress

Then set it up in one of two ways:

#### Option 1: Configure in the dashboard

 1. Go to Settings > Lettermint
 2. Enter your Lettermint API token
 3. Adjust the sender address and other options as needed
 4. Test your configuration using the built-in test email feature

#### Option 2: Configure with constants or environment variables

Prefer to keep your settings out of the database? Define them as PHP constants in
wp-config, or as environment variables. This suits staging and production setups
and config-as-code deployments.

    ```
    define( 'LETTERMINT_API_TOKEN', 'lm_...' );
    ```

You can also add a constant from the command line with WP-CLI, which edits wp-config
for you:

    ```
    wp config set LETTERMINT_API_TOKEN lm_...
    ```

A constant takes precedence over an environment variable, which takes precedence
over anything saved in the dashboard. Settings defined this way are shown as read-
only on the settings screen.

Available names:

 * `LETTERMINT_API_TOKEN` — your Lettermint API token
 * `LETTERMINT_FROM_EMAIL` — sender email address
 * `LETTERMINT_FROM_NAME` — sender name
 * `LETTERMINT_FORCE_EMAIL` — use the sender email for all outgoing mail (`1`/`0`)
 * `LETTERMINT_FORCE_FROM_NAME` — use the sender name for all outgoing mail (`1`/`
   0`)
 * `LETTERMINT_FORCE_HTML` — always send emails as HTML (`1`/`0`)
 * `LETTERMINT_ROUTE_SLUG` — custom route slug
 * `LETTERMINT_TAG` — tag applied to all emails
 * `LETTERMINT_ENABLE_LOGS` — enable activity logging (`1`/`0`)

Boolean settings accept `1`/`0` as well as `true`/`false`.

#### Verify with WP-CLI

If you use WP-CLI, the plugin adds a `lettermint` command.

Check that your API token is valid:

    ```
    wp lettermint status
    ```

Send a test email through Lettermint to confirm delivery:

    ```
    wp lettermint test you@example.com
    ```

## Najczęściej zadawane pytania

### Where do I get my API token?

You can get your API token from the [Lettermint Dashboard](https://app.lettermint.co/projects)
in your project settings.

### Will this work with my existing WordPress emails?

Yes! The plugin seamlessly integrates with WordPress’s wp_mail() function, so all
plugins and themes that send emails will automatically use Lettermint.

### What happens if there’s a conflict with another email plugin?

The plugin automatically detects common email plugins and shows a warning if conflicts
are detected. You should deactivate other email plugins to avoid conflicts.

### Can I test if emails are working?

Yes! The plugin includes a built-in test email feature in the Settings > Lettermint
> Test Email tab.

### Is logging required?

No, logging is optional but recommended during setup to help troubleshoot any issues.
You can disable it once everything is working properly.

### Can I configure the plugin with constants or environment variables?

Yes. Every setting can be supplied with a PHP constant or an environment variable
instead of the settings screen, which keeps secrets and environment-specific values
out of the database. See the Installation section for the available names.

### Does the plugin support WP-CLI?

Yes. The plugin adds a `wp lettermint` command with two subcommands: `wp lettermint
status` checks that your API token is valid, and `wp lettermint test` sends a test
email.

## Recenzje

![](https://secure.gravatar.com/avatar/d6fd9fe018a460f0cf76901780c367311bec1c67e3ad660ed085828ca3328b62?
s=60&d=retro&r=g)

### 󠀁[Minimalist and effective](https://wordpress.org/support/topic/minimalist-and-effective/)󠁿

 [designu](https://profiles.wordpress.org/designu/) 2026-04-08

Simple, clean, and does exactly what it promises. No unnecessary features, no bloat,
just solid functionality that works reliably. It’s refreshing to use a plugin that
stays focused on its purpose and executes it well. Highly recommended.

 [ Przeczytaj 1 recenzje ](https://wordpress.org/support/plugin/lettermint/reviews/)

## Kontrybutorzy i deweloperzy

„Lettermint” jest oprogramowaniem open source. Poniższe osoby miały wkład w rozwój
wtyczki.

Zaangażowani

 *   [ Lettermint ](https://profiles.wordpress.org/lettermint/)

[Przetłumacz wtyczkę “Lettermint” na swój język.](https://translate.wordpress.org/projects/wp-plugins/lettermint)

### Interesuje cię rozwój wtyczki?

[Przeglądaj kod](https://plugins.trac.wordpress.org/browser/lettermint/), sprawdź
[repozytorium SVN](https://plugins.svn.wordpress.org/lettermint/) lub czytaj [dziennik rozwoju](https://plugins.trac.wordpress.org/log/lettermint/)
przez [RSS](https://plugins.trac.wordpress.org/log/lettermint/?limit=100&mode=stop_on_copy&format=rss).

## Rejestr zmian

#### 1.5.0

 * Added WP-CLI support: `wp lettermint status` checks that your API token is valid,
   and `wp lettermint test` sends a test email
 * Any setting can now be configured with a constant in wp-config or an environment
   variable
 * Logs are now stored in a dedicated `{prefix}_lettermint_logs` table with an indexed`
   created_at` column, replacing the previous autoloaded option
 * Fixed memory exhaustion caused by base64-encoded attachment payloads in log entries;
   new entries store filename and size only
 * Existing log entries are cleared on upgrade to immediately relieve memory pressure;
   the old `lettermint_logs` option is removed
 * Logging defaults to off for new installs; the upgrade preserves logging for installs
   that previously had it enabled
 * Plugin options and the logs table are removed on uninstall
 * Updated Dutch translations
 * Bumped minimum WordPress version to 6.4

#### 1.4.3

 * Tested up to WordPress 7.0
 * Updated admin header design to match new Lettermint dashboard branding

#### 1.4.2

 * Added WordPress and plugin version to test email footer
 * Added dismissible notice on logs page explaining Success status

#### 1.4.1

 * Fixed RFC 5322 compliance: from name now properly quoted for special characters(
   commas, ampersands, etc.)
 * Fixed HTML entities in blog name being sent as encoded text (e.g., & instead 
   of &)

#### 1.4.0

 * Plugin now sends all emails through Lettermint when API token is configured
 * From Email Address is now optional (uses WordPress default when empty)
 * From Name is now optional (uses site name when empty)
 * Force Email Address and Force Name now work independently of each other
 * Simplified setup: just add your API token and you’re ready to go

#### 1.3.1

 * Fixed sender email now applies even when Force Email Address is disabled (allows
   plugins to override)
 * Improved description text for Force Email Address option
 * Fixed From email field placeholder to show WordPress default email instead of
   admin email

#### 1.3.0

 * Added API Token Test button to validate token before saving
 * Added Tag setting in Advanced Settings to tag all emails from a site
 * Added „From” column in logs table
 * Logs now capture all WordPress emails, including those sent via the default mailer
 * Logs are automatically cleared when disabling logging
 * Updated Dutch translations

#### 1.2.1

 * Added „Force HTML” option in Advanced Settings for sites where HTML emails are
   sent as plain text

#### 1.2.0

 * Fixed HTML emails not rendering correctly
 * Improved logs: added Subject and To columns for better overview
 * Added View Error button to see detailed error information in a modal
 * Updated Dutch translations

#### 1.1.0

 * Added „View Details” button in logs table linking to Lettermint dashboard
 * Improved interface
 * Added advanced settings section with custom route support

#### 1.0.1

 * Added Dutch translation support
 * Added sender name functionality with force override option

#### 1.0.0

 * Initial release
 * Seamless wp_mail() integration
 * API token and sender email configuration
 * Test email functionality
 * Comprehensive logging system
 * Plugin conflict detection
 * Professional WordPress admin interface
 * GDPR compliant Europe-based email service

## Meta

 *  Wersja **1.5.0**
 *  Ostatnia aktualizacja **5 dni temu**
 *  Włączone instalacje **200+**
 *  Wersja WordPressa ** 6.4 lub nowszej **
 *  Testowano do **7.0**
 *  Wersja PHP ** 7.4 lub nowszej **
 *  Język
 * [English (US)](https://wordpress.org/plugins/lettermint/)
 * Tagi
 * [email](https://pl.wordpress.org/plugins/tags/email/)[smtp](https://pl.wordpress.org/plugins/tags/smtp/)
   [transactional](https://pl.wordpress.org/plugins/tags/transactional/)[wp-mail](https://pl.wordpress.org/plugins/tags/wp-mail/)
 *  [Widok zaawansowany](https://pl.wordpress.org/plugins/lettermint/advanced/)

## Oceny

 5 na 5 gwiazdek.

 *  [  1 recenzja 5-gwiazdkowa     ](https://wordpress.org/support/plugin/lettermint/reviews/?filter=5)
 *  [  0 recenzji 4-gwiazdkowych     ](https://wordpress.org/support/plugin/lettermint/reviews/?filter=4)
 *  [  0 recenzji 3-gwiazdkowych     ](https://wordpress.org/support/plugin/lettermint/reviews/?filter=3)
 *  [  0 recenzji 2-gwiazdkowych     ](https://wordpress.org/support/plugin/lettermint/reviews/?filter=2)
 *  [  0 recenzji 1-gwiazdkowych     ](https://wordpress.org/support/plugin/lettermint/reviews/?filter=1)

[Your review](https://wordpress.org/support/plugin/lettermint/reviews/#new-post)

[Zobacz wszystkierecenzje.](https://wordpress.org/support/plugin/lettermint/reviews/)

## Zaangażowani

 *   [ Lettermint ](https://profiles.wordpress.org/lettermint/)

## Wsparcie

Masz coś do dodania? Potrzebujesz pomocy?

 [Zobacz forum wsparcia](https://wordpress.org/support/plugin/lettermint/)