Revamp Mail Script To Properly Format Mails -- 2

I am looking for someone to convert a script... Currently the script receives an email piped from Postfix. It then modifies the content to add data from a database to the email and formats it as HTML, it also re-attaches any previously attached files. And attaches files which are required for the Database data which is inserted. Problems: 1. The script does not maintain the HTML formatting when receiving an email back, and replying on it. Everything except for the mail content I then reply on is shown as Text, so no html is preserved. 2. When I reply on an email that was replied to me. i.e. I send an email, they reply and I reply again, The content is added again, but because the HTML is thrown away there are thus duplicates attached for all images that were embedded. And any images that the person who replied attached inline, is also shown as normal attachments in outlook 3. The current script downloads files and attachments into a temp directory to re-attach them. I'd like the script to clean up itself, Meaning all files it worked with need to be removed once done to prevent disk space wastage.