diff --git a/modules/setting-management/src/Volo.Abp.SettingManagement.Blazor/Pages/SettingManagement/EmailSettingGroup/EmailSettingGroupViewComponent.razor b/modules/setting-management/src/Volo.Abp.SettingManagement.Blazor/Pages/SettingManagement/EmailSettingGroup/EmailSettingGroupViewComponent.razor
index e80115cfde..177f1d75fa 100644
--- a/modules/setting-management/src/Volo.Abp.SettingManagement.Blazor/Pages/SettingManagement/EmailSettingGroup/EmailSettingGroupViewComponent.razor
+++ b/modules/setting-management/src/Volo.Abp.SettingManagement.Blazor/Pages/SettingManagement/EmailSettingGroup/EmailSettingGroupViewComponent.razor
@@ -95,7 +95,7 @@
                 <SubmitButton Clicked="@UpdateSettingsAsync"/>
                 @if (HasSendTestEmailPermission)
                 {
-                    <Button style="margin: 0.25rem" Color="Color.Primary" Clicked="OpenSendTestEmailModalAsync">@L["SendTestEmail"]</Button>
+                    <Button style="margin: 0.25rem" Color="Color.Primary" Outline Clicked="OpenSendTestEmailModalAsync">@L["SendTestEmail"]</Button>
                 }
             </Column>