diff --git a/core/lib/presentation/utils/theme_utils.dart b/core/lib/presentation/utils/theme_utils.dart
index 98b7134ac..bd4c2c85e 100644
--- a/core/lib/presentation/utils/theme_utils.dart
+++ b/core/lib/presentation/utils/theme_utils.dart
@@ -162,6 +162,18 @@ class ThemeUtils {
     color: color,
   );
 
+  static TextStyle textStyleHeadingH4({
+    Color? color,
+    FontWeight? fontWeight,
+  }) => TextStyle(
+    fontFamily: ConstantsUI.fontApp,
+    fontWeight: fontWeight ?? FontWeight.w500,
+    letterSpacing: 0.0,
+    fontSize: 32,
+    height: 40 / 32,
+    color: color,
+  );
+
   static TextStyle textStyleHeadingHeadingSmall({
     Color? color,
     FontWeight? fontWeight,
diff --git a/lib/features/base/widget/email_avatar_builder.dart b/lib/features/base/widget/email_avatar_builder.dart
index 8d89c7528..cddbfc6ed 100644
--- a/lib/features/base/widget/email_avatar_builder.dart
+++ b/lib/features/base/widget/email_avatar_builder.dart
@@ -1,5 +1,6 @@
 
 import 'package:core/presentation/extensions/color_extension.dart';
+import 'package:core/presentation/utils/theme_utils.dart';
 import 'package:core/presentation/views/image/avatar_builder.dart';
 import 'package:flutter/material.dart';
 import 'package:model/email/presentation_email.dart';
@@ -19,10 +20,7 @@ class EmailAvatarBuilder extends StatelessWidget {
     return (AvatarBuilder()
       ..text(emailSelected.getAvatarText())
       ..size(50)
-      ..addTextStyle(const TextStyle(
-          fontWeight: FontWeight.bold,
-          fontSize: 21,
-          color: Colors.white))
+      ..addTextStyle(ThemeUtils.textStyleHeadingH4(color: Colors.white))
       ..backgroundColor(AppColor.colorAvatar)
       ..avatarColor(emailSelected.avatarColors))
     .build();
diff --git a/model/lib/email/presentation_email.dart b/model/lib/email/presentation_email.dart
index 6df1e9a75..7da5ce58a 100644
--- a/model/lib/email/presentation_email.dart
+++ b/model/lib/email/presentation_email.dart
@@ -103,7 +103,7 @@ class PresentationEmail with EquatableMixin, SearchSnippetMixin {
 
   String getAvatarText() {
     if (getSenderName().isNotEmpty) {
-      return getSenderName().firstLetterToUpperCase;
+      return getSenderName().firstCharacterToUpperCase;
     }
     return '';
   }