diff --git a/includes/class-form-handler.php b/includes/class-form-handler.php
index 88e951c..b99289c 100644
--- a/includes/class-form-handler.php
+++ b/includes/class-form-handler.php
@@ -117,13 +117,13 @@ class Umzugsliste_Form_Handler {
 
 			// Show error message
 			wp_die(
-				'<h1>E-Mail konnte nicht versendet werden</h1>
-				<p>Ihre Anfrage wurde gespeichert, aber die E-Mail konnte nicht versendet werden.</p>
-				<p><strong>Bitte kontaktieren Sie uns telefonisch:</strong></p>
+				'<h1>' . esc_html__( 'Email could not be sent', 'siegel-umzugsliste' ) . '</h1>
+				<p>' . esc_html__( 'Your request has been saved, but the email could not be sent.', 'siegel-umzugsliste' ) . '</p>
+				<p><strong>' . esc_html__( 'Please contact us by phone:', 'siegel-umzugsliste' ) . '</strong></p>
 				<p>Wiesbaden: <a href="tel:+4961122020">(06 11) 2 20 20</a><br>
 				Mainz: <a href="tel:+49613122141">(0 61 31) 22 21 41</a></p>
-				<p><a href="' . home_url() . '">Zurück zur Startseite</a></p>',
-				'E-Mail-Fehler'
+				<p><a href="' . esc_url( home_url() ) . '">' . esc_html__( 'Back to homepage', 'siegel-umzugsliste' ) . '</a></p>',
+				esc_html__( 'Email Error', 'siegel-umzugsliste' )
 			);
 		}
 
diff --git a/languages/siegel-umzugsliste-de_DE.mo b/languages/siegel-umzugsliste-de_DE.mo
index d03dbb5..c08dff8 100644
Binary files a/languages/siegel-umzugsliste-de_DE.mo and b/languages/siegel-umzugsliste-de_DE.mo differ
diff --git a/languages/siegel-umzugsliste-de_DE.po b/languages/siegel-umzugsliste-de_DE.po
index 2b12a48..ec33b8e 100644
--- a/languages/siegel-umzugsliste-de_DE.po
+++ b/languages/siegel-umzugsliste-de_DE.po
@@ -5,16 +5,16 @@ msgstr ""
 "Project-Id-Version: Umzugsliste 1.0.0\n"
 "Report-Msgid-Bugs-To: https://wordpress.org/support/plugin/Siegel-"
 "Umzugsliste\n"
+"POT-Creation-Date: 2026-02-06T15:05:40+00:00\n"
+"PO-Revision-Date: 2026-02-06T14:52:05+00:00\n"
 "Last-Translator: Automatically generated\n"
 "Language-Team: none\n"
+"Language: de\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"POT-Creation-Date: 2026-02-06T14:52:05+00:00\n"
-"PO-Revision-Date: 2026-02-06T14:52:05+00:00\n"
 "X-Generator: WP-CLI 2.12.0\n"
 "X-Domain: siegel-umzugsliste\n"
-"Language: de\n"
 "Plural-Forms: nplurals=2; plural=(n != 1);\n"
 
 #. Plugin Name of the plugin
@@ -106,6 +106,26 @@ msgstr "Sicherheitsüberprüfung fehlgeschlagen. Bitte versuchen Sie es erneut."
 msgid "Captcha verification failed. Please try again."
 msgstr "Captcha-Verifizierung fehlgeschlagen. Bitte versuchen Sie es erneut."
 
+#: includes/class-form-handler.php:120
+msgid "Email could not be sent"
+msgstr "E-Mail konnte nicht versendet werden"
+
+#: includes/class-form-handler.php:121
+msgid "Your request has been saved, but the email could not be sent."
+msgstr "Ihre Anfrage wurde gespeichert, aber die E-Mail konnte nicht versendet werden."
+
+#: includes/class-form-handler.php:122
+msgid "Please contact us by phone:"
+msgstr "Bitte kontaktieren Sie uns telefonisch:"
+
+#: includes/class-form-handler.php:125
+msgid "Back to homepage"
+msgstr "Zurück zur Startseite"
+
+#: includes/class-form-handler.php:126
+msgid "Email Error"
+msgstr "E-Mail-Fehler"
+
 #: includes/class-form-handler.php:145
 msgid "Name (Loading Address)"
 msgstr "Name (Beladeadresse)"
diff --git a/languages/siegel-umzugsliste.pot b/languages/siegel-umzugsliste.pot
index cda1dfb..26f5534 100644
--- a/languages/siegel-umzugsliste.pot
+++ b/languages/siegel-umzugsliste.pot
@@ -9,7 +9,7 @@ msgstr ""
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
-"POT-Creation-Date: 2026-02-06T14:52:05+00:00\n"
+"POT-Creation-Date: 2026-02-06T15:05:40+00:00\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "X-Generator: WP-CLI 2.12.0\n"
 "X-Domain: siegel-umzugsliste\n"
@@ -108,6 +108,26 @@ msgstr ""
 msgid "Captcha verification failed. Please try again."
 msgstr ""
 
+#: includes/class-form-handler.php:120
+msgid "Email could not be sent"
+msgstr ""
+
+#: includes/class-form-handler.php:121
+msgid "Your request has been saved, but the email could not be sent."
+msgstr ""
+
+#: includes/class-form-handler.php:122
+msgid "Please contact us by phone:"
+msgstr ""
+
+#: includes/class-form-handler.php:125
+msgid "Back to homepage"
+msgstr ""
+
+#: includes/class-form-handler.php:126
+msgid "Email Error"
+msgstr ""
+
 #: includes/class-form-handler.php:145
 msgid "Name (Loading Address)"
 msgstr ""