About an emotion

Hello guys!

Generally, I use emotions on Email or LINE etc. because I feel little curt and not unfriendly without emotions.

Recently I have watched YouTube videos about different cultures.
I forgot the youtuber's country. The women says that to use many emotions to be emotional with the opposite sex means "I feel affection for you" in her country.

I was surprised and I had a question. How do people in other another countriesy people feel about my email.? I use many emotions but it's does not mean " I feel affection for you" only that I want to write in a friendly way.

I want to know how different cultures in email.