Like, I tried out Death Knight, found it wasn't for me, but when I tried to delete the character (so I could use the name for a new character), it said I couldn't, since the character had mail. So, I got back on, to go check my mail, and it turns out I can't see mail as a Starter Edition. Fair enough, but I would still like to delete it so I can delete my character.
And before someone says "You can't play Hero Classes as Starter Edition, this is clearly a troll", you, in fact, can, you just need to level a character up to level 10 first. The only exception is Allied Race (which a Starter Edition player wouldn't have access to)/ Pandaren Death Knights, which require owning Shadowlands.