Render an Email to MIME Without Sending

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Demonstrates the Chilkat MailMan.RenderToMime method, which renders an Email object as the MIME text that would be sent to the SMTP server, without actually sending it. This example builds a message and prints the rendered MIME.

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    --  Demonstrates the MailMan.RenderToMime method, which renders an Email object as the MIME
    --  text that would be sent to the SMTP server, without actually sending the email.

    DECLARE @mailman int
    EXEC @hr = sp_OACreate 'Chilkat.MailMan', @mailman OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    --  Build the email to render.
    DECLARE @email int
    EXEC @hr = sp_OACreate 'Chilkat.Email', @email OUT

    EXEC sp_OASetProperty @email, 'Subject', 'Rendered email'
    EXEC sp_OASetProperty @email, 'From', 'alice@example.com'
    DECLARE @success int
    EXEC sp_OAMethod @email, 'AddTo', @success OUT, 'Bob', 'bob@example.com'
    EXEC sp_OASetProperty @email, 'Body', 'This message is rendered to MIME, not sent.'

    --  Render to MIME (no connection to the SMTP server is made).
    DECLARE @mime nvarchar(4000)
    EXEC sp_OAMethod @mailman, 'RenderToMime', @mime OUT, @email

    PRINT @mime

    --  Sample output:
    --  
    --    MIME-Version: 1.0
    --    Date: Fri, 17 Jul 2026 05:25:42 -0500
    --    Message-ID: <E13F164829E44779462366BF1D8020CA210F8F1F@CHILKAT25>
    --    Content-Type: text/plain; charset=us-ascii; format=flowed
    --    Content-Transfer-Encoding: 7bit
    --    X-Priority: 3 (Normal)
    --    Subject: Rendered email
    --    From: alice@example.com
    --    To: Bob <bob@example.com>
    --  
    --    This message is rendered to MIME, not sent.
    --  
    --  Note: The Date header is automatically added with the current date/time, and a unique
    --  Message-ID header is generated and added.  The other headers (Content-Type,
    --  Content-Transfer-Encoding, X-Priority, and MIME-Version) have the same values you would
    --  see with Email.GetMime.

    EXEC @hr = sp_OADestroy @mailman
    EXEC @hr = sp_OADestroy @email


END
GO