Does Mail.app (Mac) have an API where developers can create plugins for Mail?
I'm confused by an official Knowledge Base article Apple wrote that states:
Apple does not support the installation or use of third-party plugins with Mail.app. Third-party Mail plugins are located in ~/Library/Mail/Bundles and /Library/Mail/Bundles.
So plugin's are located in /Bundles, but they are not supported?
I'm confused.