diff --git a/cmd/mailfull/mailfull.go b/cmd/mailfull/mailfull.go
deleted file mode 100644
index c2fb110..0000000
--- a/cmd/mailfull/mailfull.go
+++ /dev/null
@@ -1,144 +0,0 @@
-/*
-Command mailfull is a CLI application using the mailfull package.
-*/
-package main
-
-import (
-	"fmt"
-	"os"
-	"path/filepath"
-
-	"github.com/directorz/mailfull-go"
-	"github.com/mitchellh/cli"
-)
-
-var (
-	version = mailfull.Version
-	gittag  = ""
-)
-
-func init() {
-	if gittag != "" {
-		version = version + "-" + gittag
-	}
-}
-
-func main() {
-	c := &cli.CLI{
-		Name:    filepath.Base(os.Args[0]),
-		Version: version,
-		Args:    os.Args[1:],
-	}
-
-	meta := Meta{
-		UI: &cli.BasicUi{
-			Reader:      os.Stdin,
-			Writer:      os.Stdout,
-			ErrorWriter: os.Stderr,
-		},
-		CmdName: c.Name,
-		Version: c.Version,
-	}
-
-	c.Commands = map[string]cli.CommandFactory{
-		"init": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &InitCommand{Meta: meta}, nil
-		},
-		"genconfig": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &GenConfigCommand{Meta: meta}, nil
-		},
-		"domains": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &DomainsCommand{Meta: meta}, nil
-		},
-		"domainadd": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &DomainAddCommand{Meta: meta}, nil
-		},
-		"domaindel": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &DomainDelCommand{Meta: meta}, nil
-		},
-		"domaindisable": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &DomainDisableCommand{Meta: meta}, nil
-		},
-		"domainenable": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &DomainEnableCommand{Meta: meta}, nil
-		},
-		"aliasdomains": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &AliasDomainsCommand{Meta: meta}, nil
-		},
-		"aliasdomainadd": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &AliasDomainAddCommand{Meta: meta}, nil
-		},
-		"aliasdomaindel": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &AliasDomainDelCommand{Meta: meta}, nil
-		},
-		"users": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &UsersCommand{Meta: meta}, nil
-		},
-		"useradd": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &UserAddCommand{Meta: meta}, nil
-		},
-		"userdel": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &UserDelCommand{Meta: meta}, nil
-		},
-		"userpasswd": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &UserPasswdCommand{Meta: meta}, nil
-		},
-		"usercheckpw": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &UserCheckPwCommand{Meta: meta}, nil
-		},
-		"aliasusers": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &AliasUsersCommand{Meta: meta}, nil
-		},
-		"aliasuseradd": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &AliasUserAddCommand{Meta: meta}, nil
-		},
-		"aliasusermod": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &AliasUserModCommand{Meta: meta}, nil
-		},
-		"aliasuserdel": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &AliasUserDelCommand{Meta: meta}, nil
-		},
-		"catchall": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &CatchAllCommand{Meta: meta}, nil
-		},
-		"catchallset": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &CatchAllSetCommand{Meta: meta}, nil
-		},
-		"catchallunset": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &CatchAllUnsetCommand{Meta: meta}, nil
-		},
-		"commit": func() (cli.Command, error) {
-			meta.SubCmdName = c.Subcommand()
-			return &CommitCommand{Meta: meta}, nil
-		},
-	}
-
-	exitCode, err := c.Run()
-	if err != nil {
-		fmt.Fprintf(meta.UI.ErrorWriter, "%v\n", err)
-	}
-
-	os.Exit(exitCode)
-}
diff --git a/cmd/mailfull/main.go b/cmd/mailfull/main.go
index b64a8e9..c2fb110 100644
--- a/cmd/mailfull/main.go
+++ b/cmd/mailfull/main.go
@@ -1,30 +1,144 @@
+/*
+Command mailfull is a CLI application using the mailfull package.
+*/
 package main
 
 import (
-	"bytes"
-	"flag"
+	"fmt"
+	"os"
+	"path/filepath"
 
+	"github.com/directorz/mailfull-go"
 	"github.com/mitchellh/cli"
 )
 
-// Meta is for `*Command` struct.
-type Meta struct {
-	UI         *cli.BasicUi
-	CmdName    string
-	SubCmdName string
-	Version    string
+var (
+	version = mailfull.Version
+	gittag  = ""
+)
+
+func init() {
+	if gittag != "" {
+		version = version + "-" + gittag
+	}
 }
 
-// noCommitFlag returns true if `pargs` has "-n" flag.
-// `pargs` is overwrites with non-flag arguments.
-func noCommitFlag(pargs *[]string) (bool, error) {
-	nFlag := false
+func main() {
+	c := &cli.CLI{
+		Name:    filepath.Base(os.Args[0]),
+		Version: version,
+		Args:    os.Args[1:],
+	}
 
-	flagSet := flag.NewFlagSet("", flag.ContinueOnError)
-	flagSet.SetOutput(&bytes.Buffer{})
-	flagSet.BoolVar(&nFlag, "n", nFlag, "")
-	err := flagSet.Parse(*pargs)
-	*pargs = flagSet.Args()
+	meta := Meta{
+		UI: &cli.BasicUi{
+			Reader:      os.Stdin,
+			Writer:      os.Stdout,
+			ErrorWriter: os.Stderr,
+		},
+		CmdName: c.Name,
+		Version: c.Version,
+	}
 
-	return nFlag, err
+	c.Commands = map[string]cli.CommandFactory{
+		"init": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &InitCommand{Meta: meta}, nil
+		},
+		"genconfig": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &GenConfigCommand{Meta: meta}, nil
+		},
+		"domains": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &DomainsCommand{Meta: meta}, nil
+		},
+		"domainadd": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &DomainAddCommand{Meta: meta}, nil
+		},
+		"domaindel": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &DomainDelCommand{Meta: meta}, nil
+		},
+		"domaindisable": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &DomainDisableCommand{Meta: meta}, nil
+		},
+		"domainenable": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &DomainEnableCommand{Meta: meta}, nil
+		},
+		"aliasdomains": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &AliasDomainsCommand{Meta: meta}, nil
+		},
+		"aliasdomainadd": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &AliasDomainAddCommand{Meta: meta}, nil
+		},
+		"aliasdomaindel": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &AliasDomainDelCommand{Meta: meta}, nil
+		},
+		"users": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &UsersCommand{Meta: meta}, nil
+		},
+		"useradd": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &UserAddCommand{Meta: meta}, nil
+		},
+		"userdel": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &UserDelCommand{Meta: meta}, nil
+		},
+		"userpasswd": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &UserPasswdCommand{Meta: meta}, nil
+		},
+		"usercheckpw": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &UserCheckPwCommand{Meta: meta}, nil
+		},
+		"aliasusers": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &AliasUsersCommand{Meta: meta}, nil
+		},
+		"aliasuseradd": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &AliasUserAddCommand{Meta: meta}, nil
+		},
+		"aliasusermod": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &AliasUserModCommand{Meta: meta}, nil
+		},
+		"aliasuserdel": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &AliasUserDelCommand{Meta: meta}, nil
+		},
+		"catchall": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &CatchAllCommand{Meta: meta}, nil
+		},
+		"catchallset": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &CatchAllSetCommand{Meta: meta}, nil
+		},
+		"catchallunset": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &CatchAllUnsetCommand{Meta: meta}, nil
+		},
+		"commit": func() (cli.Command, error) {
+			meta.SubCmdName = c.Subcommand()
+			return &CommitCommand{Meta: meta}, nil
+		},
+	}
+
+	exitCode, err := c.Run()
+	if err != nil {
+		fmt.Fprintf(meta.UI.ErrorWriter, "%v\n", err)
+	}
+
+	os.Exit(exitCode)
 }
diff --git a/cmd/mailfull/meta.go b/cmd/mailfull/meta.go
new file mode 100644
index 0000000..b64a8e9
--- /dev/null
+++ b/cmd/mailfull/meta.go
@@ -0,0 +1,30 @@
+package main
+
+import (
+	"bytes"
+	"flag"
+
+	"github.com/mitchellh/cli"
+)
+
+// Meta is for `*Command` struct.
+type Meta struct {
+	UI         *cli.BasicUi
+	CmdName    string
+	SubCmdName string
+	Version    string
+}
+
+// noCommitFlag returns true if `pargs` has "-n" flag.
+// `pargs` is overwrites with non-flag arguments.
+func noCommitFlag(pargs *[]string) (bool, error) {
+	nFlag := false
+
+	flagSet := flag.NewFlagSet("", flag.ContinueOnError)
+	flagSet.SetOutput(&bytes.Buffer{})
+	flagSet.BoolVar(&nFlag, "n", nFlag, "")
+	err := flagSet.Parse(*pargs)
+	*pargs = flagSet.Args()
+
+	return nFlag, err
+}