Emote-splitter will abruptly interrupt looping macros, such as :

/run lyrics={"There's a stranger in my bed","There's a pounding in my head","Glitter all over the room","Pink flamingos in the pool"} for i=1,#lyrics do SendChatMessage(lyrics[i],"SAY") end

It will send the first event in a loop, but absolutely stops the others from occurring, while a "SENDING..." message hands at the bottom left of the screen.

Hi, when sending multiple messages emote splitter verifies that each one is delivered before the next. You might not see it in your UI, but there is a prompt to "press enter to continue" for each message queued - this was a requirement that Blizzard added some time ago to prevent addons from sending world messages without user input.

Emote Splitter also supports newlines in the chat message as "\n" (literal slash-n, not a control character), e.g.,

/say There's a stranger in my bed\nThere's a pounding in my head...