diff --git a/addons/mail/static/src/core/common/core.dark.scss b/addons/mail/static/src/core/common/core.dark.scss
index f2f3f5d22de..20349cdc6fc 100644
--- a/addons/mail/static/src/core/common/core.dark.scss
+++ b/addons/mail/static/src/core/common/core.dark.scss
@@ -1,3 +1,7 @@
 .o-discuss-badge {
     --o-discuss-badge-bg: #{$primary}; // sync with --o-navbar-badge-bg
 }
+
+a.o_mail_redirect, a.o_channel_redirect {
+    @include button-variant(rgba($primary, .2), rgba($primary, .2), lighten($link-color, 5%), rgba($primary, .3), rgba($primary, .3), lighten($link-color, 10%));
+}
diff --git a/addons/mail/static/src/core/common/core.scss b/addons/mail/static/src/core/common/core.scss
index b1b7351c2d4..729b6f9581e 100644
--- a/addons/mail/static/src/core/common/core.scss
+++ b/addons/mail/static/src/core/common/core.scss
@@ -43,12 +43,7 @@
 }
 
 a.o_mail_redirect, a.o_channel_redirect {
-    background: rgba($primary, .2) !important;
-    @extend .btn;
-    @extend .btn-sm;
-    @extend .btn-link;
-    @extend .align-baseline;
-    @extend .fw-normal;
-    @extend .px-1;
-    @extend .py-0;
+    @include button-variant(rgba($primary, .2), rgba($primary, .2), darken($link-color, 5%), rgba($primary, .3), rgba($primary, .3), darken($link-color, 10%));
+    @include button-size($btn-padding-y-sm, $btn-padding-x-sm, $btn-font-size-sm, $btn-border-radius-sm);
+    padding: map-get($spacers, 1);
 }