diff --git a/onboarding/static/js/mail_button.js b/onboarding/static/js/mail_button.js
new file mode 100644
index 00000000..0e10554b
--- /dev/null
+++ b/onboarding/static/js/mail_button.js
@@ -0,0 +1,32 @@
+(function(n, d){
+	let mainLang = n.languages ? n.languages[0] : (n.language || n.userLanguage), mail = "", text = "C";
+	let arr = ['t', 'c', 'a', 't', 'n', 'o', 'c'], i = arr.length - 1, isNext = false;
+
+	if(/pl/i.test(mainLang) ){
+		arr[1] = arr[i] = 'k';
+		text = "K";
+	}
+	for(; i >= 0; i--){
+		mail += arr[i];
+		if(isNext){
+			text += arr[i];
+		}
+		isNext = true;
+	}
+
+	mail += "@";
+	mail += "onboardingstep.com";// location.hostname (www);
+	let containers = document.querySelectorAll(".js-mail"), a = "mail";
+	i = containers.length - 1;
+	mail = a + "to:" + mail;
+
+	for(; i >= 0; i--){
+		a = d.createElement("a");
+		a.href = mail;
+		a.rel = "nofollow";
+
+		a.appendChild(d.createTextNode(text) );
+		a.className = "nav-link";
+		containers[i].appendChild(a);
+	}
+})(navigator, document);
diff --git a/onboarding/static/js/mail_button.min.js b/onboarding/static/js/mail_button.min.js
new file mode 100644
index 00000000..1e3a4edf
--- /dev/null
+++ b/onboarding/static/js/mail_button.min.js
@@ -0,0 +1 @@
+(function(n, d){let b=n.languages?n.languages[0]:(n.language||n.userLanguage),c="",e="C",g=['t','c','a','t','n','o','c'],i=g.length-1,h=false;if(/pl/i.test(b)){g[1]=g[i]='k';e="K";}for(;i>=0;i--){c+=g[i];if(h){e+=g[i];}h=true;}c+="@";c+="onboardingstep.com";let j=document.querySelectorAll(".js-mail"),a="mail";i=j.length-1;c=a+"to:"+c;for(;i>=0;i--){a=d.createElement("a");a.href=c;a.rel="nofollow";a.appendChild(d.createTextNode(e));a.className="nav-link";j[i].appendChild(a);}})(navigator, document);