What is the definition of Mailserver?

A mailserver is like the postal service of the digital world, but instead of delivering letters to your address, it delivers emails. It's the unsung hero behind your inbox, sorting through the digital mailboxes of millions (or billions) of users, trying to make sure your emails don't get lost in the virtual chaos like a stamp that's been left out of the mail.

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Here's an edgy example sentence: "The mailserver decided to send my email to the nearest space station because it thought I was just a cosmic nuisance."