This plugin saves all deleted and purged messages, as well as all edit history and ghost pings. It also has highly configurable ignore options, and allows restoring deleted messages after restarting Discord.

1. Make sure you have BetterDiscord installed. You can download it from here.
2. Download the latest version of the plugin from this repository.
3. Save the plugin file in your BetterDiscord plugins folder. You can access this folder by going to User Settings > Plugins > Open Plugin Folder.
4. Refresh Discord by pressing Ctrl+R or Cmd+R on Mac.

The plugin has several configurable options, including ignore options for specific users, channels, and message contents. To access the configuration menu, go to User Settings > Plugins > Message Logger Plugin > Settings.

Once installed, the plugin will automatically start logging deleted and purged messages, as well as edit history and ghost pings. You can access the logs by going to User Settings > Plugins > Message Logger Plugin > Logs.