diff --git a/go.mod b/go.mod
index 26ea6df..33e4752 100644
--- a/go.mod
+++ b/go.mod
@@ -5,4 +5,14 @@ go 1.17
 require (
 	github.com/robfig/cron/v3 v3.0.1
 	gopkg.in/yaml.v2 v2.4.0
+	local/sandbox/contact/contact v0.0.0-00010101000000-000000000000
 )
+
+require (
+	github.com/bytbox/go-pop3 v0.0.0-20120201222208-3046caf0763e // indirect
+	github.com/emersion/go-imap v1.2.0 // indirect
+	github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21 // indirect
+	golang.org/x/text v0.3.7 // indirect
+)
+
+replace local/sandbox/contact/contact => ../sandbox/contact/contact
diff --git a/go.sum b/go.sum
index 441e8f1..2842c41 100644
--- a/go.sum
+++ b/go.sum
@@ -1,5 +1,17 @@
+github.com/bytbox/go-pop3 v0.0.0-20120201222208-3046caf0763e h1:mQTN05gz0rDZSABqKMzAPMb5ATWcvvdMljRzEh0LjBo=
+github.com/bytbox/go-pop3 v0.0.0-20120201222208-3046caf0763e/go.mod h1:alXX+s7a4cKaIprgjeEboqi4Tm7XR/HXEwUTxUV/ywU=
+github.com/emersion/go-imap v1.2.0 h1:lyUQ3+EVM21/qbWE/4Ya5UG9r5+usDxlg4yfp3TgHFA=
+github.com/emersion/go-imap v1.2.0/go.mod h1:Qlx1FSx2FTxjnjWpIlVNEuX+ylerZQNFE5NsmKFSejY=
+github.com/emersion/go-message v0.15.0/go.mod h1:wQUEfE+38+7EW8p8aZ96ptg6bAb1iwdgej19uXASlE4=
+github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21 h1:OJyUGMJTzHTd1XQp98QTaHernxMYzRaOasRir9hUlFQ=
+github.com/emersion/go-sasl v0.0.0-20200509203442-7bfe0ed36a21/go.mod h1:iL2twTeMvZnrg54ZoPDNfJaJaqy0xIQFuBdrLsmspwQ=
+github.com/emersion/go-textwrapper v0.0.0-20200911093747-65d896831594/go.mod h1:aqO8z8wPrjkscevZJFVE1wXJrLpC5LtJG7fqLOsPb2U=
 github.com/robfig/cron/v3 v3.0.1 h1:WdRxkvbJztn8LMz/QEvLN5sBU+xKpSqwwUO1Pjr4qDs=
 github.com/robfig/cron/v3 v3.0.1/go.mod h1:eQICP3HwyT7UooqI/z+Ov+PtYAWygg1TEWWzGIFLtro=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
diff --git a/pttodo/action.go b/pttodo/action.go
new file mode 100644
index 0000000..8a43336
--- /dev/null
+++ b/pttodo/action.go
@@ -0,0 +1,36 @@
+package pttodo
+
+import (
+	"errors"
+	"local/sandbox/contact/contact"
+	"net/url"
+	"regexp"
+)
+
+type Action string
+
+var (
+	actionEmailPattern = regexp.MustCompile(`[^@]+@.*[^\.]+\.[a-z]+`)
+)
+
+func (action Action) String() string {
+	return string(action)
+}
+
+func (action Action) CB() (func() error, error) {
+	u, _ := url.Parse(action.String())
+	switch u.Scheme {
+	case "email":
+		return action.email
+	}
+	if actionEmailPattern.MatchString(action.String()) {
+		return action.email, nil
+	}
+	return nil, errors.New("unrecognized action")
+}
+
+func (action Action) email() error {
+	em := contact.NewEmailer()
+	_ = em
+	return errors.New("not impl")
+}