Create Microsoft Outlook Plugin to show unanswered threads -- 2

The goal of this project is to help me identify emails that I have sent to others but have not yet been responded to (so I can send another email/ask again). Requirements: * must be implemented as an Outlook plugin * must work with Outlook 2010 * must be implemented in C#; no VBA * must include well documented source code in a git repository * must include instructions on how to build Behavior: Here is how it could work: 1. I click on the button in the ribbon to see unresponded threads (conversations) 2. the plugin goes through any sent message for the last x days (reasonable default for x = 14) and finds any any message that I sent. 3. for each message found in the previous step, the plugin will get all other messages in the same thread (conversation). now we have a collection of candidate threads (conversations). if my message is the most recent message in the thread, keep it and show it in the filter. if my message is not the most recent one in the thread, then drop it (because that message is likely a response to mine). 4. now the plugin has a collection of threads (conversations) where my message is the most recent. show only those threads (conversations). The above steps start with sent messages, load threads (conversations), then filter. Alternatively, you could load all threads with any activity in the last 2 weeks first and then examine each thread (conversation) to see whether the most recent message in that thread is mine. I actually think this method is cleaner than the one above as because it is more general so if this way is possible I would prefer it. Note, this must not only show me the most recent message that I sent, but also the entire thread. The plugin must demonstrate a simple capability of being configurable (perhaps a right click context menu) that will allow me to change settings (like how many weeks back the plugin will search).