I'm a expert of Outlook plugin development, I developed many plugin/macros during my work. All my bidding projects here are related to Outlook, I finished them on time and got very good feedback, and you can refer to my finished projects for this.
I finished a similar project which search special outlook item(note or task), for your requirement, it is similar and we just need to add the regular expression part based on your requirement.
You can refer to below link for the previous taks I finished:
https://www.freelancer.com/projects/software-development/Open-Specific-Outlook-Notes-Tasks.html