diff --git a/pages/software.liquid b/pages/software.liquid
index dfae403..0ef4cfe 100644
--- a/pages/software.liquid
+++ b/pages/software.liquid
@@ -251,6 +251,13 @@ sections:
             body: >-
                 Email library with JMAP provider. Minimal spec-compliant
                 client using reqwest+serde.
+          - title: Upyo (@upyo/jmap)
+            href: https://upyo.org/transports/jmap
+            languages: [JavaScript, TypeScript]
+            license: MIT
+            body: >-
+                Email sending library with a JMAP transport. Supports session
+                discovery, automatic identity resolution, and attachments.
           - title: zend-jmap
             href: https://github.com/WikiSuite/zend-jmap
             languages: [PHP]