diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cf09336..e8f4413 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,3 +24,6 @@ jobs:
       - name: Run tests
         shell: bash
         run: ./check_email_pr.sh --test
+      - name: Test event handling
+        shell: bash
+        run: bash test/check_event_types.sh
diff --git a/README.md b/README.md
index 2d1704a..e606f50 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,10 @@ Qualcomm PR email addresses checker
 For each commit in a PR, validates that the commit's author and committer email
 addresses are appropriate for the repo.
 
-**NOTE:** This action should be used with `pull_request` events.
+**NOTE:** This action should be used with `pull_request` or
+`pull_request_target` events. It exits successfully without checking anything
+for other event types during normal execution. The `--test` option intentionally
+uses fixture data regardless of the event type.
 
 ## Example Usage
 
diff --git a/check_email_pr.sh b/check_email_pr.sh
index 67c9c57..6beecf2 100755
--- a/check_email_pr.sh
+++ b/check_email_pr.sh
@@ -47,6 +47,14 @@ EOF
     exit 10
 }
 
+is_pr_event() {
+    case "${GITHUB_EVENT_NAME:-}" in
+        pull_request|pull_request_target) return 0 ;;
+        *) return 1 ;;
+    esac
+}
+
+TEST_MODE=()
 while [ $# -gt 0 ] ; do
     case "$1" in
         --test) shift ; TEST_MODE=("--verbose") ;;
@@ -55,6 +63,11 @@ while [ $# -gt 0 ] ; do
     shift
 done
 
+if [ "${#TEST_MODE[@]}" -eq 0 ] && ! is_pr_event ; then
+    debug "Skipping email check for non-PR event: ${GITHUB_EVENT_NAME:-unknown}"
+    exit 0
+fi
+
 RESULT=0
 while read -r pr_commit ; do
     debug "Running check on: $pr_commit"
diff --git a/test/check_event_types.sh b/test/check_event_types.sh
new file mode 100755
index 0000000..c06821f
--- /dev/null
+++ b/test/check_event_types.sh
@@ -0,0 +1,56 @@
+#!/usr/bin/env bash
+# Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
+# SPDX-License-Identifier: BSD-3-Clause
+set -euo pipefail
+
+ROOT_DIR=$(cd -- "$(dirname -- "$0")/.." && pwd)
+
+run_non_pr_event_test() {
+    local event output status
+    event=$1
+
+    if [ "$event" = "unset" ] ; then
+        if output=$(env -u GITHUB_EVENT_NAME -u PULL_NUMBER -u COMMITS_COUNT \
+            GITHUB_API_URL= \
+            PATH="$ROOT_DIR/test/fake_bin:$PATH" \
+            "$ROOT_DIR/check_email_pr.sh" 2>&1) ; then
+            status=0
+        else
+            status=$?
+        fi
+    elif output=$(env -u PULL_NUMBER -u COMMITS_COUNT \
+        GITHUB_API_URL= \
+        GITHUB_EVENT_NAME="$event" \
+        PATH="$ROOT_DIR/test/fake_bin:$PATH" \
+        "$ROOT_DIR/check_email_pr.sh" 2>&1) ; then
+        status=0
+    else
+        status=$?
+    fi
+
+    [ "$status" -eq 0 ]
+    ! grep -q 'curl was called' <<< "$output"
+    ! grep -q 'jq was called' <<< "$output"
+    ! grep -q 'integer expression expected' <<< "$output"
+}
+
+run_pull_request_event_test() {
+    local event output
+    event=$1
+
+    output=$(env -u TEST_MODE \
+        PULL_NUMBER=1 \
+        COMMITS_COUNT=2 \
+        GITHUB_API_URL=https://api.example.com \
+        GITHUB_EVENT_NAME="$event" \
+        PATH="$ROOT_DIR/test/fake_bin/pr_target:$PATH" \
+        "$ROOT_DIR/check_email_pr.sh" 2>&1)
+
+    grep -q 'Running check on:' <<< "$output"
+}
+
+for event in push workflow_dispatch schedule unset ; do
+    run_non_pr_event_test "$event"
+done
+run_pull_request_event_test pull_request
+run_pull_request_event_test pull_request_target
diff --git a/test/fake_bin/curl b/test/fake_bin/curl
new file mode 100755
index 0000000..e2ad019
--- /dev/null
+++ b/test/fake_bin/curl
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+echo 'curl was called' >&2
+exit 1
diff --git a/test/fake_bin/jq b/test/fake_bin/jq
new file mode 100755
index 0000000..1c8bd5b
--- /dev/null
+++ b/test/fake_bin/jq
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+echo 'jq was called' >&2
+exit 1
diff --git a/test/fake_bin/pr_target/curl b/test/fake_bin/pr_target/curl
new file mode 100755
index 0000000..0ebb446
--- /dev/null
+++ b/test/fake_bin/pr_target/curl
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+ROOT_DIR=$(cd -- "$(dirname -- "$0")/../../.." && pwd)
+cat "$ROOT_DIR/test/pr_list_commits.json"