Fixed email

main.go

@@ -1,18 +1,13 @@
 package main
 
 import (
-	"context"
 	"fmt"
 	"log"
 	"net/http"
+	"net/smtp"
 	"time"
-
-	"github.com/mailgun/mailgun-go/v4"
 )
 
-const yourDomain string = "sandbox403bedf0d09d4e539131fabf0ab7c11f.mailgun.org" // e.g. mg.yourcompany.com
-const privateAPIKey string = "key-2b58bc1193c549df83d8d5ed54e1c982"
-
 const host = "rodberrypi"
 
 func main() {
@@ -29,7 +24,7 @@ func main() {
 }
 
 func endPointAlive() bool {
-	res, err := http.Get("http://"+host+":2122/heartbeat")
+	res, err := http.Get("http://" + host + ":2122/heartbeat")
 	if err != nil {
 		log.Println(err)
 		return false
@@ -44,22 +39,41 @@ func endPointAlive() bool {
 }
 
 func sendMail() {
-	mg := mailgun.NewMailgun(yourDomain, privateAPIKey)
+	// Sender data.
+	from := "rodbiren@gmail.com"
+	password := "Lovers8991"
 
-	sender := "robviren@gmail.com"
-	subject := "Fridge Lost Power!"
-	body := "Make Rob go fix it!"
-	recipient := "rcviren@gmail.com"
+	// Receiver email address.
+	to := []string{"rcviren@gmail.com"}
 
-	message := mg.NewMessage(sender, subject, body, recipient)
+	// smtp server configuration.
+	smtpServer := smtpServer{host: "smtp.gmail.com", port: "587"}
 
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
-	defer cancel()
+	// Message.
+	mime := "MIME-version: 1.0;\nContent-Type: text/plain; charset=\"UTF-8\";\n\n"
+	subject := "Subject: " + "Garage Power is Out" + "!\n"
+	message := []byte(subject + mime + "\n" + "Make Rob Fix It!")
 
-	resp, id, err := mg.Send(ctx, message)
+	// Authentication.
+	auth := smtp.PlainAuth("", from, password, smtpServer.host)
 
+	// Sending email.
+	err := smtp.SendMail(smtpServer.Address(), auth, from, to, message)
 	if err != nil {
-		log.Fatal(err)
+		fmt.Println(err)
+		return
 	}
-	fmt.Printf("ID: %s Resp: %s\n", id, resp)
+
+	fmt.Println("Email Sent!")
+}
+
+// smtpServer data to smtp server.
+type smtpServer struct {
+	host string
+	port string
+}
+
+// Address URI to smtp server.
+func (s *smtpServer) Address() string {
+	return s.host + ":" + s.port
 }