diff --git a/lib/features/email/presentation/extensions/attachment_extension.dart b/lib/features/email/presentation/extensions/attachment_extension.dart
index 3ec192c2c..46281d395 100644
--- a/lib/features/email/presentation/extensions/attachment_extension.dart
+++ b/lib/features/email/presentation/extensions/attachment_extension.dart
@@ -39,5 +39,5 @@ extension AttachmentExtension on Attachment {
 
   DownloadTaskId get downloadTaskId => DownloadTaskId(blobId!.value);
 
-  bool get isHTMLFile => type?.isPDFFile(fileName: name) ?? false;
+  bool get isHTMLFile => type?.isHTMLFile(fileName: name) ?? false;
 }
\ No newline at end of file
diff --git a/lib/features/email/presentation/widgets/html_attachment_previewer.dart b/lib/features/email/presentation/widgets/html_attachment_previewer.dart
index 737ba82a0..720df144f 100644
--- a/lib/features/email/presentation/widgets/html_attachment_previewer.dart
+++ b/lib/features/email/presentation/widgets/html_attachment_previewer.dart
@@ -52,7 +52,7 @@ class HtmlAttachmentPreviewer extends StatelessWidget {
                             responsiveUtils: responsiveUtils,
                             desktop: _buildHtmlViewerWith(
                               context,
-                              width: constraints.maxWidth * 0.4,
+                              width: constraints.maxWidth * 0.8,
                               height: constraints.maxHeight - _verticalMargin * 2
                             ),
                             tablet: _buildHtmlViewerWith(