<syntaxhighlight lang="delphi"> procedure Rset; virtual; </syntaxhighlight>
Sends RSET command to a POP3 server. This command is valid only during TRANSACTION state. If you marked some messages as deleted using Dele method, RSET command will unmark or undelete them. The messages are not actually deleted before Quit is issued. The server should reply only with positive response which you can handle in OnRequestDone event.
<syntaxhighlight lang="delphi"> Pop3Cli.Rset; </syntaxhighlight>
<syntaxhighlight lang="cpp"> Pop3Cli->Rset(); </syntaxhighlight>