Download: https://www.esumsoft.com/download/
POP Peeper v5.6.1 is a minor release for one specific update (full list of changes).
With v5.6 deprecating Gmail/Oauth2, many people had questions why their Gmail accounts were reporting a login error. v5.6.1 adds new information to the error report when a Gmail accounts results in a login error. The error will mention that an app-password is necessary and provide a link for more information.
v5.6.1 also adds the option to create a keyboard shortcut for the “move to folder” action (for IMAP accounts). The keyboard shortcut can be added:
main menu: Tools / PPtweaker / Shortcuts / (Main or Message) / Move to folder