Privacy benefits of using own email server for creating accounts

I'm really into sysadmin stuff and decided to setup an email server at home as a fun project. Now that it's running and can receive emails without any problems I'm wondering if there would be any privacy benefits of using this server for signing up on websites. The obvious benefits would be that nobody than I has access to my data and I can make sure that everything is as secure as I prefer. But on the other side I'm …

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