If you're developing a solution that you intend to distribute to more than a few people, you should convert your VBA code into an Outlook COM or VSTO add-in or an Office add-in for Outlook. However, developing an add-in typically requires considerably more programming knowledge than creating a short macro. If your VBA project is relatively simple, and there aren't too many people that have to use it, you may want to distribute the code together with instructions to set it up.