feat: add reply-to header in email notification (#6393)

* feat: add reply-to header to smtp messages

* fix: grpc reply_to_address min 0 and js var name

* fix: add missing translations

* fix merge and linting

---------

Co-authored-by: Livio Spring <livio.a@gmail.com>

internal/notification/channels/smtp/channel.go

@@ -17,9 +17,10 @@ import (
 var _ channels.NotificationChannel = (*Email)(nil)
 
 type Email struct {
-	smtpClient    *smtp.Client
-	senderAddress string
-	senderName    string
+	smtpClient     *smtp.Client
+	senderAddress  string
+	senderName     string
+	replyToAddress string
 }
 
 func InitChannel(ctx context.Context, getSMTPConfig func(ctx context.Context) (*Config, error)) (*Email, error) {
@@ -36,9 +37,10 @@ func InitChannel(ctx context.Context, getSMTPConfig func(ctx context.Context) (*
 	logging.New().Debug("successfully initialized smtp email channel")
 
 	return &Email{
-		smtpClient:    client,
-		senderName:    smtpConfig.FromName,
-		senderAddress: smtpConfig.From,
+		smtpClient:     client,
+		senderName:     smtpConfig.FromName,
+		senderAddress:  smtpConfig.From,
+		replyToAddress: smtpConfig.ReplyToAddress,
 	}, nil
 }
 
@@ -54,6 +56,7 @@ func (email *Email) HandleMessage(message channels.Message) error {
 	}
 	emailMsg.SenderEmail = email.senderAddress
 	emailMsg.SenderName = email.senderName
+	emailMsg.ReplyToAddress = email.replyToAddress
 	// To && From
 	if err := email.smtpClient.Mail(emailMsg.SenderEmail); err != nil {
 		return caos_errs.ThrowInternalf(err, "EMAIL-s3is3", "could not set sender: %v", emailMsg.SenderEmail)