>>>I implemented email in an application for a client's vertical market application back in 2007 using Blat. It's now not working. In the runtime, it's producing error 2027, "Declare DLL caused an exception". In the IDE, it just spins and spins. Pretty sure it's on the call to the Blat Send function.
>>>
>>>In fact, I grabbed the parameter string the application generated and tried from the Command Window and it's spinning and spinning.
>>>
>>>I'm testing in Windows 10 v. 2004.
>>
>>You could try running the BLAT EXE/DLL and/or the app in compatibility mode (e.g. Windows 7).
>
>I'm using the DLL via DECLARE DLL. How would I do that in compatibility mode?
>
>Tamar

As far as I understand, run your EXE in compatibility mode. This should force the dll into EXE's context.
At least it's a try.