diff --git a/external/sendmail.go b/external/sendmail.go
new file mode 100644
index 0000000..4c93946
--- /dev/null
+++ b/external/sendmail.go
@@ -0,0 +1,78 @@
+package external
+
+import (
+	"context"
+	"fmt"
+	"net/smtp"
+
+	"github.com/mudler/local-agent-framework/action"
+	"github.com/sashabaranov/go-openai/jsonschema"
+)
+
+func NewSendMail(config map[string]string) *SendMailAction {
+	return &SendMailAction{
+		username: config["username"],
+		password: config["password"],
+		email:    config["email"],
+		smtpHost: config["smtpHost"],
+		smtpPort: config["smtpPort"],
+	}
+}
+
+type SendMailAction struct {
+	username string
+	password string
+	email    string
+	smtpHost string
+	smtpPort string
+}
+
+func (a *SendMailAction) Run(ctx context.Context, params action.ActionParams) (string, error) {
+	result := struct {
+		Message string `json:"message"`
+		To      string `json:"to"`
+		Subject string `json:"subject"`
+	}{}
+	err := params.Unmarshal(&result)
+	if err != nil {
+		fmt.Printf("error: %v", err)
+
+		return "", err
+	}
+
+	// Authentication.
+	auth := smtp.PlainAuth("", a.email, a.password, a.smtpHost)
+
+	// Sending email.
+	err = smtp.SendMail(
+		fmt.Sprintf("%s:%s", a.smtpHost, a.smtpPort),
+		auth, a.email, []string{
+			result.To,
+		}, []byte(result.Message))
+	if err != nil {
+		return "", err
+	}
+	return fmt.Sprintf("Email sent to %s", result.To), nil
+}
+
+func (a *SendMailAction) Definition() action.ActionDefinition {
+	return action.ActionDefinition{
+		Name:        "send_email",
+		Description: "Send an email.",
+		Properties: map[string]jsonschema.Definition{
+			"to": {
+				Type:        jsonschema.String,
+				Description: "The email address to send the email to.",
+			},
+			"subject": {
+				Type:        jsonschema.String,
+				Description: "The subject of the email.",
+			},
+			"message": {
+				Type:        jsonschema.String,
+				Description: "The message to send.",
+			},
+		},
+		Required: []string{"to", "subject", "message"},
+	}
+}