There are several selectable sounds for each emote
Usage
Open the emote menu by holding the V key
Move the cursor to the desired emote and release the button
To change pages, click either the right or left side of the screen
Mods > Pop-up Emotes > Config
Configure scale and brightness of emotes
Set personal emote height. Helps when you play with custom player model mods like Yes Steve Model
Access player blacklist
If you are using a texture pack to replace default emotes that has fewer emotes than the default emount, you can hide what's left by specifying resourcePackEmoteAmount in the client config file
Server
Server-side blacklist can be managed via the /popupemotes serverblacklist add/remove/clear/show command. It requires permission level 3 (configurable) or the pop_up_emotes.moderator permission.