Vertex Snapping for Modular Meshes

I currently have a set of modular meshes made in Blender that are imported into Roblox. In Unity, there is a feature where you can select a mesh and hold V to ‘vertex snap’, which essentially allows you to align one mesh vertex to another (for example, aligning two floor tiles by corner vertices). This is essentially what I am trying to achieve in Roblox.

Does anyone know of a tool that can achieve this, or if we can access vertex data for meshes so I can program it?