The fyi full form is for your information. It’s widespread in e-mail, instant chatting, and notes, and it’s generally used for informal and brief messages. It is widely used to call attention to certain information, not just in informal communication but also in official circumstances.
F = For
Y = Your
I = Information
Fyi is also widely used in corporate communication to signal that a message or part of a message is solely for informational reasons and requires no action. This is why fy is frequently used in email subject lines.
It’s a good idea to put fyi in all capital letters in formal contexts, and especially in email subject lines—it seems a little more professional. You can still write the abbreviation in all caps if you’re using it in casual speech, but you don’t have to.
For Youth Initiative
For Youth Initiative (FYI) is a non-profit charity run by and for young people. The headquarters of FYI are in Toronto, Ontario, Canada.