If you find the solution to convert Mailbox from Exchange Database. You can simply use the SysInspire EDB to PST Recovery tool. It will easily transfer all corrupt EDB files mailbox items such as emails, contacts, chats, tasks, notes, journals, appointments, and more to multiple working file formats. it supports & live Exchange Server which is a cloud-based application. This software is free from all viruses no ads will be shown on the computer/laptop after installing the software. In the free demo, version users can recover 25 items from each folder of the EDB file.
Read More:- https://www.sysinspire.com/blog/best-edb-to-pst-converter/