I am trying to create a mesh - similar to unity’s static mesh
Sorry need more information, what program are you trying to create the mesh in?
Do you just need a collision added to your mesh or also UVs?
Take a look at this video: It will show you how to create a collision 
do import with NO colission and no Generit in menu import, then- push Ctrl+E-u will got menu from rigte panel-,low u see Colission type-it will Defoult-un rup and chek -Colission as sample…-u will getting the same colis as yur mesh.play and run then)
Okay if you notice in this screenshot im using unity and have the gutter selected. Now I dont have to do anything I can simply use the gutter render mesh as the gutter collison mesh. Is it not possible to simply use the static mesh as the collision mesh in unreal?
://inanegames.ca/gutter.png
It is possible. In the static mesh properties, under Static Mesh Settings, there is a value called Collision Complexity. Set that to “Use Complex as Simple”.