Missing email icon on samsung s7

[AC Question]

My email icon was in a folder and to get it out of it I moved it to the trash folder. I went to put it back on my homepage and it isn't in my apps folder to drag. If I use search I find it, but it won't drag. I checked the app manager and it isn't disabled. If I switch to easy mode it shows up on my homepage just not on standard. Help...