diff --git a/README.md b/README.md
index 207182b..8c0333a 100644
--- a/README.md
+++ b/README.md
@@ -1 +1,22 @@
-# 💌 mailymaily
\ No newline at end of file
+# 💌 mailymaily
+
+## Usage
+### CC
+`data-cc-address` and `data-cc-domain` to recreate cc: `data-cc-address@data-cc-domain`
+### BCC
+`data-bcc-address` and `data-bcc-domain` to recreate bcc: `data-bcc-address@data-bcc-domain`
+### Subject
+`data-subject` for the subject of the email
+### Body
+`data-body` for the body of the email
+
+## Dev
+### Dependencies
+```
+yarn
+```
+
+### Building
+```
+yarn build
+```
\ No newline at end of file
diff --git a/sample.html b/sample.html
index c098c53..c029e9b 100644
--- a/sample.html
+++ b/sample.html
@@ -11,11 +11,7 @@
   <a href="#mailgo" data-address="info" data-domain="odit.services">scrivimi!</a>
   <a href="#mailgo" data-address="info" data-domain="odit.services" data-cc="info@odit.services">morecc</a><br>
   <h3>Dark mode</h3>
-  <a class="dark" href="mailgo:info@odit.services">info@odit.services dark mode</a>
-  <br>
-  <a class="dark" href="mailgo:info@odit.services?cc=matteomanzinello@gmail.com&bcc=test">info@odit.services dark
-    mode</a>
-
+  <a class="dark" href="#mailgo" data-address="info" data-domain="odit.services" data-cc="info@odit.services">morecc</a><br>
   <h1>tel:</h1>
   <a href="#mailgo" data-tel="123456568" data-telegram="telegram">chiamami</a>
   <br>