Here is a true statement: "I speak English and have black hair, like Keanu Reeves. I'm looking into growing a beard."
If, based on the above, I were to tell people I looked like Keanu Reeves, would you consider that a reasonable claim?
BTW I'm not deriding your efforts. I'm just saying there's a big gap between 'setting up my first email server with webmail and IMAP access' and 'setting up something with the features and reliability of Gmail'.
The author has been running his own mail server for less than half a week.
There's no suggestion in the post that his setup is robust or 'Gmail-like', as claimed in the title.