More about DiskInternals Mail Recovery
DiskInternals Mail Recovery v4.1 can be downloaded on GetWinPCSoft. DiskInternals Research lets you try it first and then decide whether you want to pay $99.95 for it. Open the Communication category, the E-mail Clients subcategory, to see this program. The most popular installers for the software are MR.exe and MR64.exe.