Merge remote-tracking branch 'origin/master'

svc/internal/mailer/mailer.go

@@ -3,6 +3,7 @@ package mailer
 import (
 	"context"
 	"crypto/tls"
+	"encoding/base64"
 	"errors"
 	"fmt"
 	"net"
@@ -138,11 +139,13 @@ func (m *Mailer) Send(ctx context.Context, msg Message) error {
 }
 
 func buildMIME(from string, to []string, subject, contentType, body string) string {
-	// Subject UTF-8 basit hali (gerekirse sonra MIME encoded-word ekleriz)
+	// Encode Subject to UTF-8
+	encodedSubject := "=?UTF-8?B?" + base64.StdEncoding.EncodeToString([]byte(subject)) + "?="
+
 	headers := []string{
 		"From: " + from,
 		"To: " + strings.Join(to, ", "),
-		"Subject: " + subject,
+		"Subject: " + encodedSubject,
 		"MIME-Version: 1.0",
 		"Content-Type: " + contentType,
 		"",