diff --git a/.vortex/docs/content/workflows/variables.mdx b/.vortex/docs/content/workflows/variables.mdx
index a9395710d..6e3b6cb40 100644
--- a/.vortex/docs/content/workflows/variables.mdx
+++ b/.vortex/docs/content/workflows/variables.mdx
@@ -1262,6 +1262,14 @@ Default value: `${VORTEX_NOTIFY_PROJECT}`
 
 Defined in: `scripts/vortex/notify-email.sh`
 
+### `VORTEX_NOTIFY_EMAIL_PR_NUMBER`
+
+Git reference to notify about.
+
+Default value: `${VORTEX_NOTIFY_PR_NUMBER}`
+
+Defined in: `scripts/vortex/notify-email.sh`
+
 ### `VORTEX_NOTIFY_EMAIL_RECIPIENTS`
 
 Email address(es) to send notifications to.
diff --git a/.vortex/tests/bats/notify.bats b/.vortex/tests/bats/notify.bats
index 387f1d2a9..2ceb03627 100644
--- a/.vortex/tests/bats/notify.bats
+++ b/.vortex/tests/bats/notify.bats
@@ -47,7 +47,7 @@ load _helper.bash
   popd >/dev/null || exit 1
 }
 
-@test "Notify: email" {
+@test "Notify: email, branch" {
   pushd "${LOCAL_REPO_DIR}" >/dev/null || exit 1
 
   export VORTEX_NOTIFY_CHANNELS="email"
@@ -56,6 +56,8 @@ load _helper.bash
   export VORTEX_NOTIFY_EMAIL_RECIPIENTS="john@example.com|John Doe, jane@example.com|Jane Doe, jim@example.com"
   export VORTEX_NOTIFY_REF="develop"
   export VORTEX_NOTIFY_ENVIRONMENT_URL="https://develop.testproject.com"
+  export VORTEX_DEBUG=1
+  export TEST_VORTEX_DEBUG=1
   run ./scripts/vortex/notify.sh
   assert_success
 
@@ -65,6 +67,40 @@ load _helper.bash
   assert_output_contains "Notification email(s) sent to: john@example.com, jane@example.com, jim@example.com"
   assert_output_contains "Finished email notification."
 
+  assert_output_contains "Site testproject \"develop\" branch has been deployed"
+  assert_output_contains "and is available at https://develop.testproject.com."
+  echo "${output}" >&3
+
+  assert_output_contains "Finished dispatching notifications."
+
+  popd >/dev/null || exit 1
+}
+
+@test "Notify: email, PR" {
+  pushd "${LOCAL_REPO_DIR}" >/dev/null || exit 1
+
+  export VORTEX_NOTIFY_CHANNELS="email"
+  export VORTEX_NOTIFY_PROJECT="testproject"
+  export DRUPAL_SITE_EMAIL="testproject@example.com"
+  export VORTEX_NOTIFY_EMAIL_RECIPIENTS="john@example.com|John Doe, jane@example.com|Jane Doe"
+  export VORTEX_NOTIFY_REF="develop"
+  export VORTEX_NOTIFY_PR_NUMBER="123"
+  export VORTEX_NOTIFY_ENVIRONMENT_URL="https://develop.testproject.com"
+  export VORTEX_DEBUG=1
+  export TEST_VORTEX_DEBUG=1
+  run ./scripts/vortex/notify.sh
+  assert_success
+
+  assert_output_contains "Started dispatching notifications."
+
+  assert_output_contains "Started email notification."
+  assert_output_contains "Notification email(s) sent to: john@example.com, jane@example.com"
+  assert_output_contains "Finished email notification."
+
+  assert_output_contains "Site testproject \"PR-123\" has been deployed"
+  assert_output_contains "and is available at https://develop.testproject.com."
+  echo "${output}" >&3
+
   assert_output_contains "Finished dispatching notifications."
 
   popd >/dev/null || exit 1
diff --git a/scripts/vortex/notify-email.sh b/scripts/vortex/notify-email.sh
index 6430712c1..40fced0d9 100755
--- a/scripts/vortex/notify-email.sh
+++ b/scripts/vortex/notify-email.sh
@@ -35,6 +35,9 @@ VORTEX_NOTIFY_EMAIL_RECIPIENTS="${VORTEX_NOTIFY_EMAIL_RECIPIENTS:-}"
 # Git reference to notify about.
 VORTEX_NOTIFY_EMAIL_REF="${VORTEX_NOTIFY_EMAIL_REF:-${VORTEX_NOTIFY_REF:-}}"
 
+# Git reference to notify about.
+VORTEX_NOTIFY_EMAIL_PR_NUMBER="${VORTEX_NOTIFY_EMAIL_PR_NUMBER:-${VORTEX_NOTIFY_PR_NUMBER:-}}"
+
 # Environment URL to notify about.
 VORTEX_NOTIFY_EMAIL_ENVIRONMENT_URL="${VORTEX_NOTIFY_EMAIL_ENVIRONMENT_URL:-${VORTEX_NOTIFY_ENVIRONMENT_URL:-}}"
 
@@ -68,11 +71,16 @@ else
   exit 1
 fi
 
+ref_info="\"${VORTEX_NOTIFY_EMAIL_REF}\" branch"
+if [ -n "${VORTEX_NOTIFY_EMAIL_PR_NUMBER}" ]; then
+  ref_info="\"PR-${VORTEX_NOTIFY_EMAIL_PR_NUMBER}\""
+fi
+
 timestamp=$(date '+%d/%m/%Y %H:%M:%S %Z')
 subject="${VORTEX_NOTIFY_EMAIL_PROJECT} deployment notification of \"${VORTEX_NOTIFY_EMAIL_REF}\""
 content="## This is an automated message ##
 
-Site ${VORTEX_NOTIFY_EMAIL_PROJECT} \"${VORTEX_NOTIFY_EMAIL_REF}\" branch has been deployed at ${timestamp} and is available at ${VORTEX_NOTIFY_EMAIL_ENVIRONMENT_URL}.
+Site ${VORTEX_NOTIFY_EMAIL_PROJECT} ${ref_info} has been deployed at ${timestamp} and is available at ${VORTEX_NOTIFY_EMAIL_ENVIRONMENT_URL}.
 
 Login at: ${VORTEX_NOTIFY_EMAIL_ENVIRONMENT_URL}/user/login"