diff --git a/readme.md b/readme.md
index 8a4f97c..e5d4a17 100644
--- a/readme.md
+++ b/readme.md
@@ -267,6 +267,7 @@ Inspired by the [awesome](https://github.com/sindresorhus/awesome) list thing.
 - [Buku](https://github.com/jarun/Buku) - Browser-independent bookmark manager.
 - [papis](https://github.com/papis/papis) - Extensible document and bibliography manager.
 - [pubs](https://github.com/pubs/pubs) - Scientific bibliography manager.
+- [mail-duplicate](https://github.com/kdeldycke/mail-deduplicate) - Deduplicate mails from mail boxes.
 
 ### Time Tracking