Hide the plugin

Hi.

I need to grant access to my site to external users to a specific plugin, and for that, I need to hide all the others.

I don′t want a plugin to do it, so, I am using the function:

remove_menu_page( ‘admin.php?page=PLUGIN-NAME’ );

This works for all the other plugins, but for MailPoet.
Can you please help with this?

Thanks.

Best,
Rui

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