Email processor - windows service

New a windows service (WS) written in VB.Net (preferred) or C# The WS will: 1) Monitor all incoming email for the specified domain e.g. @[login to view URL] 2) All WS actions are to be logged with verbosity (1 through 3) controlled by application setting. 3) Evaluate all emails and either process, treat as spam or place in a "dead letter queue" 4) Spam gets discarded no other action. 5) Dead letter queue will move the email to another inbox that will require manual intervention 6) All processed emails will be subject to the following: i) Convert the email, including any attachments to a PDF file ii) Extract the data from the bar code on page 1 iii) Write the data to a SQL database iv) Delete the bar code page (page 1) from the PDF file v) Store the PDF in a folder (folder path derived from application setting) vi) Move the email to a "processed" folder 7) WS should allow for multi-threading so WS can be scaled. Use of the read flag may suffice. More detailed specifications will be provided to the chosen freelancer.