Muted and blocked senders
Keep senders you don't want to see out of your lists; their emails aren't deleted.
Hiding (“Don't show these”)
The sender's emails no longer appear in your lists; nothing is deleted. You can bring them back at any time with “Show again”.
Unsubscribing
When you unsubscribe from a newsletter Tidy notes it, and shows you if the sender keeps writing afterwards.
Blocking
New emails from a blocked sender are never read, trigger nothing and are moved to the Junk folder on your mail server. If your server has no Junk folder, these emails are only hidden in Tidy.