Hi,
Thanks for inviting me to bid on this project. I suppose you've seen my related (outlook plugin) projects concluded here on freelancer. I will deliver the plugin working with Outlook 2007 and higher, up to 2013, fully branded to your needs: with an installer (created using InnoSetup), having your logo and about info, EULA, copyright notice, etc. It will add a button to the message window which, when clicked will insert the generated quotation number into the subject line and send the email. I have updated my bid to include saving to PDF. Thanks for your time explaining the requirements, all is clear and I'm ready to start with development.
I look forward to working with you.
Janos