The hMailServer forum often provides a direct libmysql.dll.zip containing the necessary 32-bit file. How to Install for hMailServer
The most reliable method is to download a 32-bit ZIP archive of an older MySQL version (such as 5.7.36 ) from the MySQL Product Archives . libmysql.dll 32 bit hmailserver download
You can also find the required DLL in the 32-bit MySQL Connector/C archives. The hMailServer forum often provides a direct libmysql
Once you have downloaded the 32-bit libmysql.dll , follow these steps to resolve "could not be loaded" errors: libmysql.dll (32-Bit) libmysql.dll 32 bit hmailserver download