I tried the Recover->Deep Scan option to recover the mbox files that got removed when I deleted an old email account in Mac Mail, but I don’t see these files anywhere in the results. Does this software recover deleted mbox files?
mbox is not a file, it’s a folder where all your emails are stored as plain text files. Deep Scan won’t help in this case, as it can’t allocate the start and end of a text file, nothing to analyze in this case. To recover mbox, you need to be protected with Recovery Vault.