These applications will enable users to retrieve their most valuable e-mail message, when they have been accidentally erased or got corrupted.
It should be mentioned that these utilities are not fail-proof, if the e-mails were overwritten with other information, it is extremely difficult to restore them.
Some tools can be used to manage only specific e-mail clients (such as Outlook or Thunderbird), whereas others can restore a wider range of messages.
Most of the applications dedicated to recovering e-mails will also try to restore all the attachments.