diff --git a/app/assets/stylesheets/mailers/highlighted_diff_email.scss b/app/assets/stylesheets/mailers/highlighted_diff_email.scss
index 60ff72c703e..ea40f449134 100644
--- a/app/assets/stylesheets/mailers/highlighted_diff_email.scss
+++ b/app/assets/stylesheets/mailers/highlighted_diff_email.scss
@@ -138,6 +138,13 @@ pre {
   margin: 0;
 }
 
+blockquote {
+  color: $gl-grayish-blue;
+  padding: 0 0 0 15px;
+  margin: 0;
+  border-left: 3px solid $white-dark;
+}
+
 span.highlight_word {
   background-color: $highlighted-highlight-word !important;
 }
diff --git a/changelogs/unreleased/28029-improve-blockquote-formatting-on-emails.yml b/changelogs/unreleased/28029-improve-blockquote-formatting-on-emails.yml
new file mode 100644
index 00000000000..be2a0afbc52
--- /dev/null
+++ b/changelogs/unreleased/28029-improve-blockquote-formatting-on-emails.yml
@@ -0,0 +1,4 @@
+---
+title: Improve blockquote formatting in notification emails
+merge_request:
+author: