Question

I have an email account on a remote server.
I created an application that utilizes outlook interop api to search for an email with specific subject than extract an attachment from it and save it to a directory.

Everything is fine when I run that application manually.
But when I create a scheduled task for this application, I get

Stack:
   at System.Runtime.Remoting.RemotingServices.AllocateUninitializedObject(System.RuntimeType)
   at System.Runtime.Remoting.Activation.ActivationServices.CreateInstance(System.RuntimeType)
   at System.Runtime.Remoting.Activation.ActivationServices.IsCurrentContextOK(System.RuntimeType, System.Object[], Boolean)
   at System.RuntimeTypeHandle.CreateInstance(System.RuntimeType, Boolean, Boolean, Boolean ByRef, System.RuntimeMethodHandleInternal ByRef, Boolean ByRef)
   at System.RuntimeType.CreateInstanceSlow(Boolean, Boolean, Boolean)
   at System.RuntimeType.CreateInstanceDefaultCtor(Boolean, Boolean, Boolean, Boolean)
   at System.Activator.CreateInstance(System.Type, Boolean)
   at PocketDataFromEmail.EmailManager..ctor()
   at MyApp.Program.Main(System.String[])

It is said that outlook is not suitable for that kind of scenarios:
Is Interop.Outlook multithreaded?

Any ideas on how to check the inbox of an exchange account and extract attachments without using outlook interop api?
Thanks.

Answer 1

Would Exchange Web Services be an option?

http://msdn.microsoft.com/en-us/library/dd877045.aspx

There is also MAPI, though it is older technology, and I recall it wasn’t that fun to use:

http://www.microsoft.com/downloads/en/details.aspx?FamilyID=e17e7f31-079a-43a9-bff2-0a110307611e&displaylang=en