Notes about the PMH file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The PMH file type is primarily associated with 'Pegasus Mail' by David Harris. File: PMDICT3.PMH. Lists fragments of words that could be spelled in different ways but which might sound the same or similar.