diff --git a/README.md b/README.md
index 947b6f2..0d09ef1 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,7 @@ Here are some highlights of go-mail's featureset:
 * [X] SMTP Auth support
   * [X] CRAM-MD5
   * [X] LOGIN
+  * [X] NTLM
   * [X] PLAIN
   * [X] SCRAM-SHA-1/SCRAM-SHA-1-PLUS
   * [X] SCRAM-SHA-256/SCRAM-SHA-256-PLUS