Just to let people know, if you don't block many people/ log your blocked Tumblrs (I do) then even if you get an ask that's anon you can click block on the three dots on the bottom of the ask, so to your blocked Tumblrs and their user will be there. Good to know if making a suicide bait block list
This is actually false, though it used to be true before Tumblr fixed it. Now, anonymous messages are blocked through the sender’s IP address rather than the account they’re signed into at the time. While the user will still be blocked from your inbox, they will not show up on your blocklist. Which is good, because this means people can’t just sign out of tumblr before sending a cruel anon to bypass the anon block feature.












