I’m looking for a team chat solution that allows me to *really* mute/block users, like here on Mastodon or with an `/ignore` on IRC.

Zulip and Discord don’t really mute/block messages, they only conceal their content and let you know they’re here. This doesn’t help much imho.

Is this kind of `/ignore` feature available in #Matrix or #DeltaChat?
Otherwise, are there Zulip/Discord clients that support it?