I misclicked and accidentally blocked someone, how do I undo this?

click on your messages up top left then there is a blocked tab in your pm inbox section.

Found it, tyvm sir.

While we're talking block: Can I block someone so I don't see their forum posts no longer? Some people really spam the trade forum with their useless "gg" rares and bump all the time.

No there is no inherent way to block people's forum posts. Only their PMs.

There are plugins people have made to do so but it isn't permanent and can easily be revealed like a "spoiler"
So unless you've got some serious control over not caring/knowing what someone said it probably wouldn't do much good lol.

This post was edited by straightedgerevenge on Sep 19 2022 05:11am

https://forums.d2jsp.org/topic.php?t=74470198&f=27

Thank you very much for the suggestion! Seems to be a very invasive Plugin so I will think twice about it, but it does exactly what I want.