Any mail is better with a public alias service, not only selfhosted. Because mailtracking is a very often used methode to track the user. This you can only avoid with an alias service.
You can keep the content of your emails private, using a service such as Protonmail, Tutanota or other encrypted, or using selfhosted, but it does not change that your email address is practically unique and can be tracked throughout the network.
Any mail is better with a public alias service, not only selfhosted. Because mailtracking is a very often used methode to track the user. This you can only avoid with an alias service. You can keep the content of your emails private, using a service such as Protonmail, Tutanota or other encrypted, or using selfhosted, but it does not change that your email address is practically unique and can be tracked throughout the network.