I just applied GP 18.5.1596 in an attempt to solve the issue with emailing from GP. The first attempt to email resulted in a DYNAMICS.EXE stopped working message and GP crashed. In the event viewer I see this log. The only have GP installed on their terminal server so I only one machine to try this on.
Faulting application name: Dynamics.exe, version: 18.0.28.0, time stamp: 0x5f0f4d00
Faulting module name: KERNELBASE.dll, version: 10.0.14393.5427, time stamp: 0x63368ad6
Exception code: 0x4000001f
Fault offset: 0x001539e2
Faulting process id: 0x2b60
Faulting application start time: 0x01d90cb175cb8929
Faulting application path: C:\Program Files (x86)\Microsoft Dynamics\GP\Dynamics.exe
Faulting module path: C:\Windows\System32\KERNELBASE.dll
Report Id: 43bfcd19-ac66-437f-8c65-097c3e9a3620
Faulting package full name:
Faulting package-relative application ID: