Ever heard of the evangelism? Guess not. You can do it too. Be my guest.
I do, but I do not go after people who are already Christians.
And the missionaries I support tell others who have never heard of Jesus the good news of salvation by grace through faith.
The LDS message is not Evangelism, it is a membership drive in search of tithing.
Not every type of proselyting is evangelism. Example: Here's a negative type done by religious legalists frowned upon by Jesus:
"Woe to you, teachers of the law and Pharisees, you hypocrites! You travel over land and sea to win a single convert, and when he becomes one, you make him twice as much a son of hell as you are. (Matthew 23:15)