Using New Outlook on Windows for personal email, calendar, and contact management
@felix iniguez said
I am trying to export all email conversations from myself and another person
New Outlook for Windows does have a bulk export, to a PST file.
https://support.microsoft.com/en-us/outlook/export-emails-contacts-and-calendar-items-to-outlook-using-a-pst-fil
But there two problems for what you want to do: PST export requires a qualifying Microsoft 365 subscription and it only exports full folders.
So you would first have to find and copy/move all the messages you want into a new folder and then export that.
If you can be more specific about what you mean by "export", and if you have access to a Classic Outlook setup, there might be some other options.