In order to repair the Corrupt, damaged and inaccessible EDB file you need secured software that can securely repair and recover the EDB file without doing any changes in information named as SysInspire free EDB to PST Converter. In this single software there are many multiple features provided to satisfy the user.
Features of the software
1. It automatically finds out the EDB file folder and display it to the user
2. Scans the EDB file and immediately removes their errors to re-open the EDB file
3. Shows the live preview of mailbox folders/sub-folders for the satisfaction of the user
4. Splitting feature to shorten any large recovered PST file into various small PST files (1GB up to 5GB)

For More Info:- Recover deleted mailbox Exchange 2013
As far as I know, there is no solution for recovering deleted mailboxes or Exchange database from Exchange Server. But you can easily recover deleted items from the Exchange Mailbox/database, repair corrupted data, and export Exchange mailboxes/database into Office 365, Live Exchange, PST, EML, MSG, and Outlook stores using Shoviv Exchange Recovery Manager tool. You can try its free trial version as well.

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The mailbox items on the exchange server get deleted mistakenly and you have to suffer for the loss. But, there are certain techniques that will help you to recover and restore deleted exchange server mailbox items. Either you can follow the manual ways to fix the issue or you can try a professional shortcut known as Exchange Database Recovery Tool. So, if you want to know more about the recovery process, you can explore them in this article.
If you are looking for the EDB to PST Converter Tool Online then, you should try GainTools Transfer EDB to PST Converter Utility which allows migrating Exchange EDB files in one go. If you have any doubt about the conversion evolution then, you can also try its free trial version which allows you to converts the first 50 items/folder as well. If you are satisfied with its performance then, you can also go with the full version. This software can shift EDB file to PST with all file attachments and properties (like to, bcc, cc, size, subject and more) in just a single click.