diff --git a/notify/aws_ses.sh b/notify/aws_ses.sh
index 07e0c48c..735e6204 100644
--- a/notify/aws_ses.sh
+++ b/notify/aws_ses.sh
@@ -83,7 +83,43 @@ aws_ses_send() {
   response="$(aws_rest POST "" "" "$_data")"
 }
 
+_use_container_role() {
+  # automatically set if running inside ECS
+  if [ -z "$AWS_CONTAINER_CREDENTIALS_RELATIVE_URI" ]; then
+    _debug "No ECS environment variable detected"
+    return 1
+  fi
+  _use_metadata "169.254.170.2$AWS_CONTAINER_CREDENTIALS_RELATIVE_URI"
+}
+
+_use_instance_role() {
+  _instance_role_name_url="http://169.254.169.254/latest/meta-data/iam/security-credentials/"
+
+  if _get "$_instance_role_name_url" true 1 | _head_n 1 | grep -Fq 401; then
+    _debug "Using IMDSv2"
+    _token_url="http://169.254.169.254/latest/api/token"
+    export _H1="X-aws-ec2-metadata-token-ttl-seconds: 21600"
+    _token="$(_post "" "$_token_url" "" "PUT")"
+    _secure_debug3 "_token" "$_token"
+    if [ -z "$_token" ]; then
+      _debug "Unable to fetch IMDSv2 token from instance metadata"
+      return 1
+    fi
+    export _H1="X-aws-ec2-metadata-token: $_token"
+  fi
+
+  if ! _get "$_instance_role_name_url" true 1 | _head_n 1 | grep -Fq 200; then
+    _debug "Unable to fetch IAM role from instance metadata"
+    return 1
+  fi
+
+  _instance_role_name=$(_get "$_instance_role_name_url" "" 1)
+  _debug "_instance_role_name" "$_instance_role_name"
+  _use_metadata "$_instance_role_name_url$_instance_role_name" "$_token"
+}
+
 _use_metadata() {
+  export _H1="X-aws-ec2-metadata-token: $2"
   _aws_creds="$(
     _get "$1" "" 1 |
       _normalizeJson |