As suggested earlier by Peter, I think you need to relocate the DLLs required for the MapieX object to work. If not, then check the e-mail profile in Control Panel > Search for Mail > Show Profiles. You need to replicate the same name when you use the Profile name in the Input arguments. For instance, if your default profile is named as ""Default Outlook Profile"" in Control Panel, you need to use the exact same name in Blue Prism.
I had faced the same issue and it got resolved by relocating the DLLs.