diff --git a/README.md b/README.md
index 0c4d2d1..e8a8cd9 100644
--- a/README.md
+++ b/README.md
@@ -429,6 +429,7 @@ It's a great way to learn.
 * [**Go**: _Build A Simple Terminal Emulator In 100 Lines of Golang_](https://ishuah.com/2021/03/10/build-a-terminal-emulator-in-100-lines-of-go/)
 * [**Go**: _Let's Create a Simple Load Balancer_](https://kasvith.me/posts/lets-create-a-simple-lb-go/)
 * [**Go**: _Video Encoding from Scratch_](https://github.com/kevmo314/codec-from-scratch)
+* [**Go**: _Let’s build an SMTP mail server_](https://sojebsikder.medium.com/lets-build-an-smtp-mail-server-cff9f7bc484d)
 * [**Java**: _How to Build an Android Reddit App_](https://www.youtube.com/playlist?list=PLgCYzUzKIBE9HUJU-upNvl3TRVAo9W47y) [video]
 * [**JavaScript**: _Build Your Own Module Bundler - Minipack_](https://github.com/ronami/minipack)
 * [**JavaScript**: _Learn JavaScript Promises by Building a Promise from Scratch_](https://levelup.gitconnected.com/understand-javascript-promises-by-building-a-promise-from-scratch-84c0fd855720)