One of features for Gammu SMSD which was for quite a long time in my head was ODBC support. With unified SQL backend we have right now it should be pretty easy to add support for it so I gave it a try.
It really did not take to long and the ODBC driver is committed to git and will be part of next release. The great benefit of this is that we get native database support on Windows without need to linking against database libraries, which is always painful.
The ODBC driver behaves like any other SQL based driver for SMSD, so if you are familiar with it, the configuration won't surprise you:
[smsd] service = sql driver = odbc host = dsn_of_your_database user = username password = password
All important information about the driver should be available in the manual.