--- a/cmd/sievemgr/main.go	Sat Nov 07 09:28:27 2020 +0100
+++ b/cmd/sievemgr/main.go	Sat Nov 07 16:48:55 2020 +0100
@@ -69,6 +69,7 @@
 	cmdInfo,
 	cmdCheck,
 	cmdCheckSpace,
+	cmdRename,
 }
 
 func usage() {

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cmd/sievemgr/rename.go	Sat Nov 07 16:48:55 2020 +0100
@@ -0,0 +1,65 @@
+// Copyright (C) 2020 Guido Berhoerster <guido+sievemgr@berhoerster.name>
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+package main
+
+func init() {
+	cmdRename.Flag.StringVar(&acctName, "a", "", "Select the account")
+}
+
+var cmdRename = &command{
+	UsageLine: "rename [options] old new",
+	Run:       runRename,
+}
+
+func runRename(cmd *command, args []string) error {
+	if len(args) != 2 {
+		return usageError("invalid number of arguments")
+	}
+
+	oldName, newName := args[0], args[1]
+
+	acct, err := getAccount(&conf, acctName)
+	if err != nil {
+		return err
+	}
+
+	if err := lookupHostPort(acct); err != nil {
+		return err
+	}
+
+	if err := readPassword(acct); err != nil {
+		return err
+	}
+
+	c, err := dialPlainAuth(acct)
+	if err != nil {
+		return err
+	}
+	defer c.Logout()
+
+	err = c.RenameScript(oldName, newName)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}