(SQL Server) Fetch Inbox Email Headers

Downloads the headers of all emails in the Inbox and shows some information about each, such as From, Subject, and whether the email has been seen (already read) or not.

Note: This example requires Chilkat v11.0.0 or greater.

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 @success int
    SELECT @success = 0

    -- This example requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

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

    -- Connect to an IMAP server.
    -- Use TLS
    EXEC sp_OASetProperty @imap, 'Ssl', 1
    EXEC sp_OASetProperty @imap, 'Port', 993
    EXEC sp_OAMethod @imap, 'Connect', @success OUT, 'imap.someMailServer.com'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @imap
        RETURN
      END

    -- Login
    EXEC sp_OAMethod @imap, 'Login', @success OUT, 'myLogin', 'myPassword'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @imap
        RETURN
      END

    -- Select an IMAP mailbox
    EXEC sp_OAMethod @imap, 'SelectMailbox', @success OUT, 'Inbox'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @imap
        RETURN
      END

    -- Normally, when an email is downloaded, its "Seen" flag is automatically set.
    -- We don't want our program to be interfering with the "Seen" flags.
    -- To do this, set the PeekMode to 1.
    EXEC sp_OASetProperty @imap, 'PeekMode', 1

    -- After selecting the mailbox, the NumMessages property
    -- will contain the number of emails in the mailbox.
    -- When sequence numbers (not UIDs) are used to reference emails,
    -- they range from 1 to N, where N is the number of messages in the mailbox.
    -- This example will download the headers by sequence numbers.
    DECLARE @count int
    EXEC sp_OAGetProperty @imap, 'NumMessages', @count OUT

    DECLARE @bundle int
    EXEC @hr = sp_OACreate 'Chilkat.EmailBundle', @bundle OUT

    EXEC sp_OAMethod @imap, 'FetchRange', @success OUT, 1, 1, @count, @bundle
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @imap, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @imap
        EXEC @hr = sp_OADestroy @bundle
        RETURN
      END

    EXEC sp_OAGetProperty @bundle, 'MessageCount', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN

        PRINT 'No messages in Inbox.'
        EXEC @hr = sp_OADestroy @imap
        EXEC @hr = sp_OADestroy @bundle
        RETURN
      END

    -- Loop over the email headers.  
    DECLARE @emailHeader int
    EXEC @hr = sp_OACreate 'Chilkat.Email', @emailHeader OUT

    DECLARE @i int
    SELECT @i = 0
    EXEC sp_OAGetProperty @bundle, 'MessageCount', @iTmp0 OUT
    WHILE @i < @iTmp0
      BEGIN

        EXEC sp_OAMethod @bundle, 'EmailAt', @success OUT, @i, @emailHeader

        EXEC sp_OAGetProperty @emailHeader, 'From', @sTmp0 OUT
        PRINT @sTmp0
        EXEC sp_OAGetProperty @emailHeader, 'Subject', @sTmp0 OUT
        PRINT @sTmp0

        -- Get the "Seen" flag.
        -- When an email is fetched from the IMAP server, the email flags are stored
        -- within the email in the "ckx-imap-flags" header.
        -- The call to GetMailFlag is simply getting the information from the email header.
        -- (it is not communicating with the IMAP server to get this information, because
        -- the information was obtained when downloading the headers)
        DECLARE @seenFlag int
        EXEC sp_OAMethod @imap, 'GetMailFlag', @seenFlag OUT, @emailHeader, 'Seen'
        IF @seenFlag = 1
          BEGIN

            PRINT 'This email has been read (already seen)'
          END
        ELSE
          BEGIN

            PRINT 'This email has not yet been read (it is not yet seen)'
          END

        -- We can also look directly at the "ckx-imap-flags" header:

        EXEC sp_OAMethod @emailHeader, 'GetHeaderField', @sTmp0 OUT, 'ckx-imap-flags'
        PRINT 'ckx-imap-flags: ' + @sTmp0


        PRINT '--'

        SELECT @i = @i + 1
      END

    -- Disconnect from the IMAP server.
    EXEC sp_OAMethod @imap, 'Disconnect', @success OUT

    EXEC @hr = sp_OADestroy @imap
    EXEC @hr = sp_OADestroy @bundle
    EXEC @hr = sp_OADestroy @emailHeader


END
GO