USE calibration
GO

CREATE ASSEMBLY SendEmail FROM 'C:\SendEmail.dll'
WITH PERMISSION_SET = UNSAFE
GO

CREATE PROCEDURE [dbo].[spSendMail]
   @recipients [nvarchar](4000),
   @subject [nvarchar](4000),
   @from [nvarchar](4000),
   @body [nvarchar](4000)
WITH EXECUTE AS CALLER
AS
EXTERNAL NAME [SendEmail].[StoredProcedure].[spSendMail]