This morning I just thinking how to send an empty message on Standuply channel( ). Fortunately, I just found an answer at , also an article on wikipedia about Slack stackexchange non-printing character. is a (a ) in a , that does not represent a written symbol. non-printing character code point number character set Just testing to send non printing character → ” ” and it works. (Non Printing character work on slack. 😂) I just wanna doing some fun, it’s also working on telegram, whatsapp, and instagram. 😂 (I’m able to fill instagram bio, name and address with non printing character.) (Just sending non printing character to my friend on telegram) (Whoops, empty article on medium) So funny man. Today I learn so much, thank god 🙏🏻😂