diff --git a/custom_components/mail_and_packages/config_flow.py b/custom_components/mail_and_packages/config_flow.py
index d752fc11..e9c19a27 100644
--- a/custom_components/mail_and_packages/config_flow.py
+++ b/custom_components/mail_and_packages/config_flow.py
@@ -1,6 +1,7 @@
 """Adds config flow for Mail and Packages."""
 
 import logging
+import re
 from os import path
 from typing import Any
 
@@ -14,7 +15,6 @@
     CONF_RESOURCES,
     CONF_USERNAME,
 )
-import re
 
 from .const import (
     CONF_ALLOW_EXTERNAL,
diff --git a/custom_components/mail_and_packages/translations/ca.json b/custom_components/mail_and_packages/translations/ca.json
index 6e24cab6..94a37ae9 100644
--- a/custom_components/mail_and_packages/translations/ca.json
+++ b/custom_components/mail_and_packages/translations/ca.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "No es pot connectar o iniciar la sessió al servidor de correu. Consulteu el registre per obtenir més detalls.",
             "invalid_path": "Guardeu les imatges en un altre directori.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Generar MP4 requereix ffmpeg",
             "amazon_domain": "Adreça de correu electrònic de reenviament no vàlida.",
-            "file_not_found": "No s'ha trobat el fitxer d'imatge"
+            "file_not_found": "No s'ha trobat el fitxer d'imatge",
+            "invalid_email_format": "Format d'adreça de correu electrònic no vàlid."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/de.json b/custom_components/mail_and_packages/translations/de.json
index 12fc4899..798e05be 100644
--- a/custom_components/mail_and_packages/translations/de.json
+++ b/custom_components/mail_and_packages/translations/de.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Es kann keine Verbindung zum Mailserver hergestellt oder angemeldet werden. Bitte überprüfen Sie das Protokoll für Details.",
             "invalid_path": "Bitte speichern Sie die Bilder in einem anderen Verzeichnis.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "MP4 erstellen erfordert ffmpeg",
             "amazon_domain": "Ungültige Weiterleitungs-E-Mail-Adresse.",
-            "file_not_found": "Bilddatei nicht gefunden"
+            "file_not_found": "Bilddatei nicht gefunden",
+            "invalid_email_format": "Ungültiges E-Mail-Adressformat."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/en.json b/custom_components/mail_and_packages/translations/en.json
index d812a2bf..c9ac6841 100644
--- a/custom_components/mail_and_packages/translations/en.json
+++ b/custom_components/mail_and_packages/translations/en.json
@@ -8,7 +8,7 @@
             "communication": "Unable to connect or login to the mail server. Please check the log for details.",
             "invalid_path": "Please store the images in another directory.",
             "ffmpeg_not_found": "Generate MP4 requires ffmpeg",
-            "amazon_domain": "Cannot use amazon email addresses as forward from emails.",
+            "amazon_domain": "Invalid forwarding email address.",
             "file_not_found": "Image file not found",
             "invalid_email_format": "Invalid email address format."
         },
diff --git a/custom_components/mail_and_packages/translations/es.json b/custom_components/mail_and_packages/translations/es.json
index 70f976e3..80f60852 100644
--- a/custom_components/mail_and_packages/translations/es.json
+++ b/custom_components/mail_and_packages/translations/es.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "No se puede conectar o iniciar sesión en el servidor de correo. Por favor, consulte el registro para más detalles.",
             "invalid_path": "Guarde las imágenes en otro directorio.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Generar MP4 requiere ffmpeg",
             "amazon_domain": "Dirección de correo electrónico de reenvío no válida.",
-            "file_not_found": "Archivo de imagen no encontrado"
+            "file_not_found": "Archivo de imagen no encontrado",
+            "invalid_email_format": "Formato de dirección de correo electrónico no válido."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/es_419.json b/custom_components/mail_and_packages/translations/es_419.json
index ade7c675..4df5451b 100644
--- a/custom_components/mail_and_packages/translations/es_419.json
+++ b/custom_components/mail_and_packages/translations/es_419.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "No se puede conectar o iniciar sesión en el servidor de correo. Por favor, consulte el registro para más detalles.",
             "invalid_path": "Guarde las imágenes en otro directorio.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Generar MP4 requiere ffmpeg",
             "amazon_domain": "Dirección de correo electrónico de reenvío no válida.",
-            "file_not_found": "Archivo de imagen no encontrado"
+            "file_not_found": "Archivo de imagen no encontrado",
+            "invalid_email_format": "Formato de dirección de correo electrónico inválido."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/fi.json b/custom_components/mail_and_packages/translations/fi.json
index 25114a8a..a0e7fb60 100644
--- a/custom_components/mail_and_packages/translations/fi.json
+++ b/custom_components/mail_and_packages/translations/fi.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Ei voida muodostaa yhteyttä tai kirjautua sisään postipalvelimeen. Tarkista lokista yksityiskohdat.",
             "invalid_path": "Tallenna kuvat toiseen hakemistoon.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "MP4:n luominen vaatii ffmpeg:n",
             "amazon_domain": "Virheellinen edelleenlähetettävä sähköpostiosoite.",
-            "file_not_found": "Kuvatiedostoa ei löydy"
+            "file_not_found": "Kuvatiedostoa ei löydy",
+            "invalid_email_format": "Virheellinen sähköpostiosoitteen muoto."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/fr.json b/custom_components/mail_and_packages/translations/fr.json
index e1194ffd..6e8cc572 100644
--- a/custom_components/mail_and_packages/translations/fr.json
+++ b/custom_components/mail_and_packages/translations/fr.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Impossible de se connecter ou de se connecter au serveur de messagerie. Veuillez consulter le journal pour plus de détails.",
             "invalid_path": "Veuillez stocker les images dans un autre répertoire.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Générer MP4 nécessite ffmpeg",
             "amazon_domain": "Adresse e-mail de transfert invalide.",
-            "file_not_found": "Fichier image non trouvé"
+            "file_not_found": "Fichier image non trouvé",
+            "invalid_email_format": "Format d'adresse e-mail invalide."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/hu.json b/custom_components/mail_and_packages/translations/hu.json
index 0457fee8..032a64c2 100644
--- a/custom_components/mail_and_packages/translations/hu.json
+++ b/custom_components/mail_and_packages/translations/hu.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Nem lehet csatlakozni vagy bejelentkezni az e-mail szerverhez. Kérjük, ellenőrizze a naplót a részletekért.",
             "invalid_path": "Tárolja a képeket egy másik könyvtárban.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Az MP4 generálása ffmpeg-et igényel",
             "amazon_domain": "Érvénytelen továbbítási e-mail cím.",
-            "file_not_found": "Képfájl nem található"
+            "file_not_found": "Képfájl nem található",
+            "invalid_email_format": "Érvénytelen e-mail cím formátum."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/it.json b/custom_components/mail_and_packages/translations/it.json
index 740598bd..5b103d38 100644
--- a/custom_components/mail_and_packages/translations/it.json
+++ b/custom_components/mail_and_packages/translations/it.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Impossibile connettersi o accedere al server di posta. Si prega di controllare il registro per i dettagli.",
             "invalid_path": "Conservare le immagini in un'altra directory.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Generare MP4 richiede ffmpeg",
             "amazon_domain": "Indirizzo email di inoltro non valido.",
-            "file_not_found": "File immagine non trovato"
+            "file_not_found": "File immagine non trovato",
+            "invalid_email_format": "Formato dell'indirizzo email non valido."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/ko.json b/custom_components/mail_and_packages/translations/ko.json
index 9be182eb..670054a0 100644
--- a/custom_components/mail_and_packages/translations/ko.json
+++ b/custom_components/mail_and_packages/translations/ko.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "메일 서버에 연결하거나 로그인 할 수 없습니다. 자세한 내용은 로그를 확인하십시오.",
             "invalid_path": "이미지를 다른 디렉토리에 저장하십시오.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "MP4 생성은 ffmpeg가 필요합니다",
             "amazon_domain": "잘못된 전달 이메일 주소입니다.",
-            "file_not_found": "이미지 파일을 찾을 수 없습니다"
+            "file_not_found": "이미지 파일을 찾을 수 없습니다",
+            "invalid_email_format": "잘못된 이메일 주소 형식입니다."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/nl.json b/custom_components/mail_and_packages/translations/nl.json
index ecac759c..ae81d214 100644
--- a/custom_components/mail_and_packages/translations/nl.json
+++ b/custom_components/mail_and_packages/translations/nl.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Kan geen verbinding maken met of inloggen op de mailserver. Controleer het logboek voor details.",
             "invalid_path": "Bewaar de afbeeldingen in een andere map.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "MP4 genereren vereist ffmpeg",
             "amazon_domain": "Ongeldig doorstuur e-mailadres.",
-            "file_not_found": "Afbeeldingsbestand niet gevonden"
+            "file_not_found": "Afbeeldingsbestand niet gevonden",
+            "invalid_email_format": "Ongeldig e-mailadres formaat."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/no.json b/custom_components/mail_and_packages/translations/no.json
index ca0acb85..29eecb78 100644
--- a/custom_components/mail_and_packages/translations/no.json
+++ b/custom_components/mail_and_packages/translations/no.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Kan ikke koble til eller logge inn på postserveren. Vennligst sjekk loggen for detaljer.",
             "invalid_path": "Lagre bildene i en annen katalog.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Generer MP4 krever ffmpeg",
             "amazon_domain": "Ugyldig videresendings e-postadresse.",
-            "file_not_found": "Bildefil ikke funnet"
+            "file_not_found": "Bildefil ikke funnet",
+            "invalid_email_format": "Ugyldig e-postadresseformat."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/pl.json b/custom_components/mail_and_packages/translations/pl.json
index 77ea8c57..4ea63d21 100644
--- a/custom_components/mail_and_packages/translations/pl.json
+++ b/custom_components/mail_and_packages/translations/pl.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Nie można połączyć się lub zalogować do serwera pocztowego. Sprawdź szczegóły w dzienniku.",
             "invalid_path": "Proszę przechowywać obrazy w innym katalogu.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Generowanie MP4 wymaga ffmpeg",
             "amazon_domain": "Nieprawidłowy adres e-mail do przekierowania.",
-            "file_not_found": "Nie znaleziono pliku obrazu"
+            "file_not_found": "Nie znaleziono pliku obrazu",
+            "invalid_email_format": "Nieprawidłowy format adresu e-mail."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/pt.json b/custom_components/mail_and_packages/translations/pt.json
index 66fec8ae..fb1236e5 100644
--- a/custom_components/mail_and_packages/translations/pt.json
+++ b/custom_components/mail_and_packages/translations/pt.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Não foi possível conectar ou fazer login no servidor de email. Por favor, verifique o log para obter detalhes.",
             "invalid_path": "Por favor, guarde as imagens em outro diretório.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Gerar MP4 requer ffmpeg",
             "amazon_domain": "Endereço de encaminhamento de email inválido.",
-            "file_not_found": "Arquivo de imagem não encontrado"
+            "file_not_found": "Arquivo de imagem não encontrado",
+            "invalid_email_format": "Formato de endereço de email inválido."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/pt_BR.json b/custom_components/mail_and_packages/translations/pt_BR.json
index 0e50ef5b..d2dd25b9 100644
--- a/custom_components/mail_and_packages/translations/pt_BR.json
+++ b/custom_components/mail_and_packages/translations/pt_BR.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Não foi possível conectar ou fazer login no servidor de email. Por favor, verifique o log para obter detalhes.",
             "invalid_path": "Por favor, guarde as imagens em outro diretório.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Gerar MP4 requer ffmpeg",
             "amazon_domain": "Endereço de encaminhamento de email inválido.",
-            "file_not_found": "Arquivo de imagem não encontrado"
+            "file_not_found": "Arquivo de imagem não encontrado",
+            "invalid_email_format": "Formato de endereço de email inválido."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/ru.json b/custom_components/mail_and_packages/translations/ru.json
index 51aefd09..92f33c90 100644
--- a/custom_components/mail_and_packages/translations/ru.json
+++ b/custom_components/mail_and_packages/translations/ru.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Невозможно подключиться или войти на почтовый сервер. Пожалуйста, проверьте журнал для деталей.",
             "invalid_path": "Пожалуйста, храните изображения в другом каталоге.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Для создания MP4 требуется ffmpeg",
             "amazon_domain": "Недействительный адрес электронной почты для переадресации.",
-            "file_not_found": "Файл изображения не найден"
+            "file_not_found": "Файл изображения не найден",
+            "invalid_email_format": "Неверный формат адреса электронной почты."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/sk.json b/custom_components/mail_and_packages/translations/sk.json
index 205bf686..48e492f9 100644
--- a/custom_components/mail_and_packages/translations/sk.json
+++ b/custom_components/mail_and_packages/translations/sk.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Nedá sa pripojiť alebo prihlásiť na poštový server. Podrobnosti nájdete v protokole.",
             "invalid_path": "Uložte obrázky do iného adresára.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Vytvorenie MP4 vyžaduje ffmpeg",
             "amazon_domain": "Neplatná adresa pre presmerovanie e-mailov.",
-            "file_not_found": "Obrázokový súbor nebol nájdený"
+            "file_not_found": "Obrázokový súbor nebol nájdený",
+            "invalid_email_format": "Neplatný formát e-mailovej adresy."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/sl.json b/custom_components/mail_and_packages/translations/sl.json
index fdb59b79..bd4ad790 100644
--- a/custom_components/mail_and_packages/translations/sl.json
+++ b/custom_components/mail_and_packages/translations/sl.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Poštnega strežnika ni mogoče povezati ali prijaviti. Za podrobnosti preverite dnevnik.",
             "invalid_path": "Shranite slike v drugem imeniku.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Ustvarjanje MP4 zahteva ffmpeg",
             "amazon_domain": "Neveljaven naslov za preusmerjanje e-pošte.",
-            "file_not_found": "Slikovna datoteka ni najdena"
+            "file_not_found": "Slikovna datoteka ni najdena",
+            "invalid_email_format": "Neveljaven format e-poštnega naslova."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/sv.json b/custom_components/mail_and_packages/translations/sv.json
index 33c1c650..853a3258 100644
--- a/custom_components/mail_and_packages/translations/sv.json
+++ b/custom_components/mail_and_packages/translations/sv.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "Det går inte att ansluta eller logga in på e-postservern. Kontrollera loggen för mer information.",
             "invalid_path": "Förvara bilderna i en annan katalog.",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "Generera MP4 kräver ffmpeg",
             "amazon_domain": "Ogiltig vidarebefordrings e-postadress.",
-            "file_not_found": "Bildfilen hittades inte"
+            "file_not_found": "Bildfilen hittades inte",
+            "invalid_email_format": "Ogiltigt format för e-postadress."
         },
         "step": {
             "user": {
diff --git a/custom_components/mail_and_packages/translations/zh_Hant_HK.json b/custom_components/mail_and_packages/translations/zh_Hant_HK.json
index b9d40177..257142c7 100644
--- a/custom_components/mail_and_packages/translations/zh_Hant_HK.json
+++ b/custom_components/mail_and_packages/translations/zh_Hant_HK.json
@@ -7,9 +7,10 @@
         "error": {
             "communication": "無法連接或登錄到郵件服務器。請檢查日誌以獲取詳細信息。",
             "invalid_path": "請將圖像存儲在另一個目錄中。",
-            "ffmpeg_not_found": "",
+            "ffmpeg_not_found": "生成MP4需要ffmpeg",
             "amazon_domain": "無效的轉發電郵地址。",
-            "file_not_found": "找不到圖像檔案"
+            "file_not_found": "找不到圖像檔案",
+            "invalid_email_format": "無效的電郵地址格式。"
         },
         "step": {
             "user": {