(SQL Server) Access Attached Message (Embedded Email)

How to access an email embedded within another email (i.e. an attached message).

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @email int
    -- Use "Chilkat_9_5_0.Email" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Email', @email OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Load an email from a .eml
    DECLARE @success int
    EXEC sp_OAMethod @email, 'LoadEml', @success OUT, 'embeddedEmail.eml'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @email, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @email
        RETURN
      END

    -- Display how many attached emails are embedded within
    -- this one:
    DECLARE @numAttached int
    EXEC sp_OAGetProperty @email, 'NumAttachedMessages', @numAttached OUT

    PRINT 'numAttached = ' + @numAttached

    -- Get the 1st attached message.
    DECLARE @email2 int

    EXEC sp_OAMethod @email, 'GetAttachedMessage', @email2 OUT, 0
    EXEC sp_OAGetProperty @email, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 1
      BEGIN

        -- Display the subject, From, and a header field...
        EXEC sp_OAGetProperty @email2, 'Subject', @sTmp0 OUT
        PRINT @sTmp0
        EXEC sp_OAGetProperty @email2, 'From', @sTmp0 OUT
        PRINT @sTmp0
        EXEC sp_OAMethod @email2, 'GetHeaderField', @sTmp0 OUT, 'X-SOMETHING'
        PRINT @sTmp0
      END

    EXEC @hr = sp_OADestroy @email


END
GO