Is it inappropriate to use emojis in work emails? ?

New research claims using emojis in work emails makes you look incompetent, with researchers warning it could harm your job prospects after the results of their study showed it didn't help people come across as more friendly or warm but did make them seem more incompetent.

This morning we were joined by etiquette expert, Grant Harrold, who agrees there's no use for them in a working environment and social media trainer, David Glenwright, who doesn't see the harm in them. Who do you agree with?